TapSafetyReport
A91/100

Houston Tap Water Quality: Is It Safe to Drink? (2026 Report)

Serving 5,854,523 residents · Texas

What's In Houston's Tap Water?

76
Contaminants Tested
0
Exceed EPA Limits
1
Above EPA Goals
1 contaminant above EPA health goals
ContaminantDetectedLimit (MCL)Status
Lead (90th percentile)
0.005 mg/L0.015 mg/LAbove Goal

EPA Violation History

1

Violation (last 5yr)

0

Unresolved

1

Health-Related

TIER 1 — URGENTResolved

Violation related to Nitrate

When: May 1, 2025 – May 31, 2025Rule: Surface Water Treatment RuleEnforcement: Resolving — corrective action underway

Understanding violation severity

Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.

Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly

Water Utility Details

BRAZORIA COUNTY MUD 2
Population Served

3,567

Water Source

Groundwater

System ID

TX0200386

BRAZORIA COUNTY MUD 3
Population Served

4,230

Water Source

Purchased Groundwater

System ID

TX0200560

BRAZORIA COUNTY MUD 6
Population Served

6,926

Water Source

Purchased Groundwater

System ID

TX0200578

BRAZORIA COUNTY MUD 21
Population Served

4,833

Water Source

Groundwater

System ID

TX0200610

BRAZORIA COUNTY MUD 29
Population Served

5,898

Water Source

Groundwater

System ID

TX0200612

BRAZORIA COUNTY MUD 25
Population Served

5,250

Water Source

Groundwater

System ID

TX0200615

BRAZORIA COUNTY MUD 31
Population Served

5,097

Water Source

Groundwater

System ID

TX0200645

BRAZORIA COUNTY MUD 39
Population Served

3,036

Water Source

Purchased Groundwater

System ID

TX0200650

BRAZORIA COUNTY MUD 55
Population Served

5,229

Water Source

Groundwater

System ID

TX0200659

SEDONA LAKES MUD 1
Population Served

1,977

Water Source

Groundwater

System ID

TX0200663

BRAZORIA COUNTY MUD 56
Population Served

2,643

Water Source

Groundwater

System ID

TX0200676

BRAZORIA COUNTY MUD 22
Population Served

5,310

Water Source

Purchased Groundwater

System ID

TX0200706

BRAZORIA COUNTY MUD 32
Population Served

1,971

Water Source

Purchased Groundwater

System ID

TX0200749

BRAZORIA COUNTY MUD 40
Population Served

1,986

Water Source

Groundwater

System ID

TX0200754

BRAZORIA COUNTY MUD 53
Population Served

2,910

Water Source

Groundwater

System ID

TX0200764

CHAMBERS COUNTY MUD 1
Population Served

2,500

Water Source

Purchased Surface Water

System ID

TX0360104

DENTON COUNTY FWSD 8-B
Population Served

3,090

Water Source

Purchased Surface Water

System ID

TX0610252

DENTON COUNTY FWSD 11-B
Population Served

3,897

Water Source

Purchased Surface Water

System ID

TX0610256

DENTON COUNTY FWSD 8-A
Population Served

2,955

Water Source

Purchased Surface Water

System ID

TX0610258

DENTON COUNTY FWSD 11-A
Population Served

5,160

Water Source

Purchased Surface Water

System ID

TX0610259

DENTON COUNTY FWSD 11-C
Population Served

1,977

Water Source

Purchased Surface Water

System ID

TX0610272

ELLIS COUNTY FWSD 1
Population Served

1,812

Water Source

Purchased Surface Water

System ID

TX0700081

FORT BEND COUNTY MUD 2
Population Served

6,819

Water Source

Purchased Surface Water

System ID

TX0790038

BLUE RIDGE WEST MUD
Population Served

7,545

Water Source

Groundwater

System ID

TX0790051

PLANTATION MUD
Population Served

4,263

Water Source

Groundwater

System ID

TX0790112

PECAN GROVE MUD
Population Served

14,913

Water Source

Surface Water

System ID

TX0790132

FORT BEND COUNTY MUD 26 QUAIL GREEN WEST
Population Served

5,424

Water Source

Groundwater

System ID

TX0790137

FORT BEND COUNTY MUD 30
Population Served

15,798

Water Source

Purchased Surface Water

System ID

TX0790146

FORT BEND COUNTY MUD 19
Population Served

1,497

Water Source

Purchased Groundwater

System ID

TX0790155

KINGSBRIDGE MUD
Population Served

8,663

Water Source

Purchased Surface Water

System ID

TX0790158

NORTH MISSION GLEN MUD
Population Served

8,730

Water Source

Purchased Surface Water

System ID

TX0790174

FORT BEND COUNTY MUD 37
Population Served

1,662

Water Source

Groundwater

System ID

TX0790189

PALMER PLANTATION MUD 1
Population Served

2,031

Water Source

Groundwater

System ID

TX0790199

FORT BEND COUNTY MUD 34
Population Served

5,523

Water Source

Purchased Surface Water

System ID

TX0790200

HARRIS FORT BEND COUNTIES MUD 1
Population Served

3,812

Water Source

Purchased Groundwater

System ID

TX0790216

FORT BEND COUNTY MUD 47
Population Served

2,874

Water Source

Purchased Groundwater

System ID

TX0790220

FORT BEND COUNTY MUD 41
Population Served

4,179

Water Source

Purchased Surface Water

System ID

TX0790229

FIRST COLONY MUD 9
Population Served

7,818

Water Source

Groundwater

System ID

TX0790230

FORT BEND COUNTY MUD 23
Population Served

13,548

Water Source

Groundwater

System ID

TX0790237

FORT BEND COUNTY MUD 42 WAT PLAT
Population Served

4,395

Water Source

Groundwater

System ID

TX0790254

FORT BEND COUNTY MUD 49
Population Served

1,080

Water Source

Purchased Groundwater

System ID

TX0790256

FORT BEND COUNTY MUD 48
Population Served

3,969

Water Source

Purchased Groundwater

System ID

TX0790267

FORT BEND COUNTY MUD 81 WESTON LAKES
Population Served

3,855

Water Source

Groundwater

System ID

TX0790268

FORT BEND COUNTY MUD 50
Population Served

6,234

Water Source

Purchased Surface Water

System ID

TX0790277

CINCO MUD 5
Population Served

2,460

Water Source

Purchased Groundwater

System ID

TX0790291

CINCO MUD 3
Population Served

2,517

Water Source

Purchased Groundwater

System ID

TX0790292

CINCO MUD 2
Population Served

4,743

Water Source

Purchased Groundwater

System ID

TX0790306

CINCO MUD 9
Population Served

3,828

Water Source

Purchased Groundwater

System ID

TX0790307

FORT BEND COUNTY MUD 46
Population Served

2,247

Water Source

Purchased Surface Water

System ID

TX0790315

CINCO MUD 6
Population Served

3,048

Water Source

Purchased Groundwater

System ID

TX0790316

PALMER PLANTATION MUD 2
Population Served

2,559

Water Source

Groundwater

System ID

TX0790323

CINCO MUD 8
Population Served

5,613

Water Source

Purchased Groundwater

System ID

TX0790324

BIG OAKS MUD
Population Served

6,450

Water Source

Purchased Surface Water

System ID

TX0790332

CINCO MUD 7
Population Served

4,239

Water Source

Purchased Groundwater

System ID

TX0790343

CINCO MUD 12
Population Served

2,274

Water Source

Purchased Groundwater

System ID

TX0790344

HARRIS FORT BEND COUNTIES MUD 5
Population Served

4,641

Water Source

Groundwater

System ID

TX0790347

GRAND LAKES MUD 4
Population Served

3,867

Water Source

Purchased Surface Water

System ID

TX0790356

FORT BEND COUNTY MUD 118
Population Served

5,346

Water Source

Purchased Surface Water

System ID

TX0790366

FORT BEND COUNTY MUD 116 CANYON GATE
Population Served

4,833

Water Source

Groundwater

System ID

TX0790367

FORT BEND COUNTY MUD 130
Population Served

3,150

Water Source

Groundwater

System ID

TX0790371

SIENNA MUD 3
Population Served

7,365

Water Source

Purchased Groundwater

System ID

TX0790376

FORT BEND COUNTY MUD 119
Population Served

5,088

Water Source

Purchased Surface Water

System ID

TX0790382

CINCO MUD 10
Population Served

2,583

Water Source

Purchased Groundwater

System ID

TX0790386

GRAND LAKES MUD 2
Population Served

2,076

Water Source

Purchased Surface Water

System ID

TX0790387

FORT BEND COUNTY MUD 121
Population Served

4,932

Water Source

Purchased Groundwater

System ID

TX0790393

GRAND LAKES MUD 1
Population Served

3,219

Water Source

Purchased Surface Water

System ID

TX0790410

FORT BEND COUNTY MUD 124
Population Served

2,544

Water Source

Groundwater

System ID

TX0790412

FORT BEND COUNTY MUD 122
Population Served

3,366

Water Source

Purchased Surface Water

System ID

TX0790416

CINCO MUD 14
Population Served

6,192

Water Source

Purchased Groundwater

System ID

TX0790422

FORT BEND COUNTY MUD 142
Population Served

11,595

Water Source

Purchased Surface Water

System ID

TX0790429

GRAND MISSION MUD 1
Population Served

6,663

Water Source

Purchased Surface Water

System ID

TX0790430

FORT BEND COUNTY MUD 35
Population Served

6,297

Water Source

Purchased Groundwater

System ID

TX0790433

FORT BEND COUNTY MUD 146
Population Served

5,985

Water Source

Purchased Surface Water

System ID

TX0790435

FORT BEND COUNTY MUD 151
Population Served

10,233

Water Source

Groundwater

System ID

TX0790443

FORT BEND COUNTY MUD 133
Population Served

7,362

Water Source

Purchased Surface Water

System ID

TX0790444

FORT BEND COUNTY MUD 123
Population Served

4,143

Water Source

Purchased Surface Water

System ID

TX0790446

GRAND MISSION MUD 2
Population Served

6,285

Water Source

Purchased Groundwater

System ID

TX0790449

FORT BEND COUNTY MUD 131
Population Served

3,114

Water Source

Groundwater

System ID

TX0790450

FORT BEND COUNTY MUD 141
Population Served

2,790

Water Source

Groundwater

System ID

TX0790451

SIENNA MUD 10
Population Served

7,824

Water Source

Purchased Groundwater

System ID

TX0790452

FORT BEND COUNTY MUD 57
Population Served

5,335

Water Source

Purchased Surface Water

System ID

TX0790455

FORT BEND COUNTY MUD 58
Population Served

10,629

Water Source

Purchased Surface Water

System ID

TX0790458

FORT BEND COUNTY MUD 162
Population Served

5,553

Water Source

Groundwater

System ID

TX0790459

FORT BEND COUNTY MUD 158
Population Served

2,214

Water Source

Purchased Surface Water

System ID

TX0790466

FORT BEND COUNTY MUD 24
Population Served

2,454

Water Source

Purchased Groundwater

System ID

TX0790468

FORT BEND COUNTY MUD 165
Population Served

4,314

Water Source

Purchased Surface Water

System ID

TX0790470

FORT BEND COUNTY MUD 143 WATER VIEW ESTA
Population Served

5,196

Water Source

Groundwater

System ID

TX0790472

FORT BEND COUNTY FWSD 1
Population Served

3,309

Water Source

Groundwater

System ID

TX0790474

FORT BEND COUNTY MUD 185
Population Served

3,663

Water Source

Groundwater

System ID

TX0790478

CINCO SOUTHWEST MUD 2
Population Served

5,496

Water Source

Purchased Surface Water

System ID

TX0790481

FORT BEND COUNTY MUD 152
Population Served

4,575

Water Source

Purchased Surface Water

System ID

TX0790487

FORT BEND COUNTY MUD 155
Population Served

5,292

Water Source

Purchased Surface Water

System ID

TX0790488

SIENNA MUD 4
Population Served

6,435

Water Source

Purchased Groundwater

System ID

TX0790489

SIENNA MUD 6
Population Served

5,184

Water Source

Purchased Surface Water

System ID

TX0790491

SIENNA PLANTATION MANAGEMENT DISTRICT
Population Served

4,179

Water Source

Groundwater

System ID

TX0790493

SIENNA MUD 12
Population Served

4,311

Water Source

Groundwater

System ID

TX0790494

FORT BEND COUNTY MUD 182
Population Served

10,498

Water Source

Groundwater

System ID

TX0790500

FORT BEND COUNTY MUD 190
Population Served

5,049

Water Source

Purchased Surface Water

System ID

TX0790501

FORT BEND COUNTY MUD 145 RIO VISTA
Population Served

1,263

Water Source

Purchased Groundwater

System ID

TX0790502

CINCO SOUTHWEST MUD 3 DAYCARE
Population Served

5,187

Water Source

Purchased Surface Water

System ID

TX0790521

CINCO SOUTHWEST MUD 4
Population Served

6,093

Water Source

Purchased Surface Water

System ID

TX0790522

FORT BEND COUNTY MUD 134B
Population Served

7,356

Water Source

Purchased Groundwater

System ID

TX0790532

FORT BEND COUNTY MUD 134C
Population Served

7,260

Water Source

Purchased Groundwater

System ID

TX0790533

FORT BEND COUNTY MUD 156
Population Served

1,719

Water Source

Purchased Groundwater

System ID

TX0790541

FORT BEND COUNTY MUD 194
Population Served

5,211

Water Source

Purchased Groundwater

System ID

TX0790543

FORT BEND COUNTY MUD 206 VICTORIAN GARDE
Population Served

1,836

Water Source

Purchased Surface Water

System ID

TX0790548

WILLOW POINT MUD
Population Served

1,668

Water Source

Groundwater

System ID

TX0790550

FORT BEND COUNTY MUD 184
Population Served

1,884

Water Source

Purchased Surface Water

System ID

TX0790559

FULSHEAR MUD 3A
Population Served

5,421

Water Source

Groundwater

System ID

TX0790560

FORT BEND COUNTY MUD 220
Population Served

1,812

Water Source

Groundwater

System ID

TX0790573

FORT BEND COUNTY MUD 134E
Population Served

2,733

Water Source

Groundwater

System ID

TX0790574

FORT BEND COUNTY MUD 218
Population Served

2,412

Water Source

Purchased Surface Water

System ID

TX0790582

CHARLESTON MUD
Population Served

1,212

Water Source

Groundwater

System ID

TX0790588

BRAZORIA - FORT BEND COUNTIES MUD 3
Population Served

4,149

Water Source

Groundwater

System ID

TX0790597

FORT BEND COUNTY MUD 229
Population Served

3,666

Water Source

Groundwater

System ID

TX0790602

FORT BEND COUNTY MUD 222
Population Served

3,582

Water Source

Purchased Groundwater

System ID

TX0790607

GALVESTON COUNTY MUD 12
Population Served

2,900

Water Source

Purchased Surface Water

System ID

TX0840021

GALVESTON COUNTY WCID 12
Population Served

6,189

Water Source

Purchased Surface Water

System ID

TX0840031

SOUTHERN WATER
Population Served

3,933

Water Source

Groundwater

System ID

TX1010012

CITY OF HOUSTON
Population Served

2,970,543

Water Source

Surface Water

System ID

TX1010013

SUNBELT FWSD OAKWILDE SUBDIVISION
Population Served

6,495

Water Source

Purchased Surface Water

System ID

TX1010022

CITY OF SOUTHSIDE PLACE
Population Served

2,457

Water Source

Purchased Surface Water

System ID

TX1010023

CLEAR LAKE CITY WATER AUTHORITY
Population Served

89,702

Water Source

Purchased Surface Water

System ID

TX1010056

HARRIS COUNTY WCID 91
Population Served

3,000

Water Source

Groundwater

System ID

TX1010063

HARRIS COUNTY FWSD 1A
Population Served

2,560

Water Source

Purchased Surface Water

System ID

TX1010082

CITY OF BUNKER HILL VILLAGE
Population Served

3,771

Water Source

Purchased Surface Water

System ID

TX1010106

HARRIS COUNTY WCID 84
Population Served

6,552

Water Source

Purchased Surface Water

System ID

TX1010113

SUNBELT FWSD NORTHLINE TERRACE
Population Served

3,225

Water Source

Groundwater

System ID

TX1010117

HARRIS COUNTY WCID 92
Population Served

4,752

Water Source

Groundwater

System ID

TX1010124

MEMORIAL VILLAGES WATER AUTHORITY
Population Served

11,382

Water Source

Purchased Surface Water

System ID

TX1010148

INVERNESS FOREST IMPROVEMENT DISTRICT
Population Served

2,448

Water Source

Groundwater

System ID

TX1010172

ROYALWOOD MUD
Population Served

1,101

Water Source

Groundwater

System ID

TX1010201

SEQUOIA IMPROVEMENT DISTRICT
Population Served

1,038

Water Source

Groundwater

System ID

TX1010205

HARRIS COUNTY FWSD 58
Population Served

1,968

Water Source

Groundwater

System ID

TX1010209

HARRIS COUNTY WCID 133
Population Served

5,109

Water Source

Groundwater

System ID

TX1010210

CITY OF SPRING VALLEY VILLAGE
Population Served

4,229

Water Source

Groundwater

System ID

TX1010214

CHAMPIONS MUD
Population Served

4,098

Water Source

Groundwater

System ID

TX1010233

HARRIS COUNTY FWSD 61
Population Served

15,400

Water Source

Groundwater

System ID

TX1010237

HARRIS COUNTY FWSD 51
Population Served

19,671

Water Source

Purchased Surface Water

System ID

TX1010238

HARRIS COUNTY WCID 36
Population Served

11,073

Water Source

Purchased Surface Water

System ID

TX1010239

HARRIS COUNTY WCID FONDREN ROAD
Population Served

3,144

Water Source

Purchased Surface Water

System ID

TX1010249

HARRIS COUNTY WCID 113 ENCHANTED VILLAGE
Population Served

1,233

Water Source

Groundwater

System ID

TX1010274

WESTADOR MUD
Population Served

5,337

Water Source

Purchased Surface Water

System ID

TX1010277

TIMBER LANE UTILITY DISTRICT
Population Served

24,507

Water Source

Groundwater

System ID

TX1010278

MEMORIAL HILLS UTILITY DISTRICT
Population Served

1,929

Water Source

Groundwater

System ID

TX1010279

SUNBELT FWSD HIGH MEADOWS SUBDIVISION
Population Served

8,946

Water Source

Purchased Surface Water

System ID

TX1010292

NORTH FOREST MUD
Population Served

1,545

Water Source

Groundwater

System ID

TX1010298

HARRIS COUNTY WCID 114
Population Served

5,160

Water Source

Purchased Surface Water

System ID

TX1010317

NORTH GREEN MUD
Population Served

4,941

Water Source

Groundwater

System ID

TX1010331

NORTHAMPTON MUD
Population Served

12,162

Water Source

Groundwater

System ID

TX1010337

FALLBROOK UTILITY DISTRICT
Population Served

6,720

Water Source

Groundwater

System ID

TX1010340

CITY OF HOUSTON UD 5 - KINGWOOD
Population Served

80,073

Water Source

Groundwater

System ID

TX1010348

HARRIS COUNTY WCID 136
Population Served

3,192

Water Source

Groundwater

System ID

TX1010355

ROLLING FORK PUD
Population Served

2,391

Water Source

Purchased Surface Water

System ID

TX1010357

HARRIS COUNTY WCID 109
Population Served

10,134

Water Source

Purchased Surface Water

System ID

TX1010359

NEWPORT MUD
Population Served

13,191

Water Source

Surface Water

System ID

TX1010362

BAMMEL UTILITY DISTRICT
Population Served

2,550

Water Source

Groundwater

System ID

TX1010365

LUCE BAYOU PUD
Population Served

1,083

Water Source

Groundwater

System ID

TX1010378

PONDEROSA FOREST UTILITY DISTRICT
Population Served

10,101

Water Source

Groundwater

System ID

TX1010384

SAGEMEADOW UTILITY DISTRICT
Population Served

6,987

Water Source

Purchased Surface Water

System ID

TX1010386

MEADOWHILL REGIONAL MUD
Population Served

13,863

Water Source

Groundwater

System ID

TX1010387

SHASLA PUD
Population Served

2,310

Water Source

Groundwater

System ID

TX1010388

SPRING CREEK FOREST PUD
Population Served

2,427

Water Source

Purchased Surface Water

System ID

TX1010390

HARRIS COUNTY WCID 132
Population Served

3,501

Water Source

Purchased Surface Water

System ID

TX1010413

CLEAR BROOK CITY MUD
Population Served

18,108

Water Source

Purchased Surface Water

System ID

TX1010418

SUNBELT FWSD HEATHER GLEN SUBDIVISION
Population Served

2,943

Water Source

Groundwater

System ID

TX1010419

HARRIS COUNTY MUD 11
Population Served

3,645

Water Source

Groundwater

System ID

TX1010426

CNP UTILITY DISTRICT
Population Served

14,718

Water Source

Purchased Surface Water

System ID

TX1010429

CYPRESS CREEK UTILITY DISTRICT
Population Served

2,988

Water Source

Purchased Surface Water

System ID

TX1010430

CYPRESS KLEIN UTILITY DISTRICT WIMBLETON
Population Served

3,960

Water Source

Groundwater

System ID

TX1010431

CYPRESSWOOD UTILITY DISTRICT
Population Served

4,305

Water Source

Purchased Surface Water

System ID

TX1010432

FOUNTAINHEAD MUD
Population Served

4,614

Water Source

Purchased Surface Water

System ID

TX1010435

KIRKMONT MUD
Population Served

2,289

Water Source

Purchased Surface Water

System ID

TX1010439

KLEINWOOD MUD
Population Served

4,872

Water Source

Purchased Surface Water

System ID

TX1010440

TIMBERLAKE IMPROVEMENT DISTRICT
Population Served

2,775

Water Source

Groundwater

System ID

TX1010447

PRESTONWOOD FOREST UTILITY DISTRICT
Population Served

5,940

Water Source

Purchased Surface Water

System ID

TX1010467

EL DORADO UTILITY DISTRICT
Population Served

3,591

Water Source

Groundwater

System ID

TX1010471

HARRIS COUNTY WCID 74
Population Served

5,886

Water Source

Groundwater

System ID

TX1010480

HARRIS COUNTY WCID 110
Population Served

9,807

Water Source

Groundwater

System ID

TX1010482

LAKE FOREST UTILITY DISTRICT
Population Served

7,106

Water Source

Groundwater

System ID

TX1010494

MALCOMSON ROAD UTILITY DISTRICT
Population Served

7,231

Water Source

Purchased Surface Water

System ID

TX1010495

HARRIS COUNTY MUD 6 CARRIAGE LANE
Population Served

3,936

Water Source

Purchased Surface Water

System ID

TX1010496

HARRIS COUNTY MUD 5
Population Served

5,487

Water Source

Purchased Surface Water

System ID

TX1010500

HARRIS COUNTY UTILITY DISTRICT 6
Population Served

11,262

Water Source

Purchased Surface Water

System ID

TX1010501

HARRIS COUNTY MUD 102
Population Served

10,401

Water Source

Purchased Surface Water

System ID

TX1010503

HARRIS COUNTY WCID 116
Population Served

3,627

Water Source

Groundwater

System ID

TX1010507

HARRIS COUNTY WCID 119
Population Served

9,150

Water Source

Purchased Surface Water

System ID

TX1010509

HARRIS COUNTY MUD 18 HEATHERWOOD HUNTERS
Population Served

4,083

Water Source

Purchased Surface Water

System ID

TX1010512

LOUETTA ROAD UTILITY DISTRICT
Population Served

1,410

Water Source

Purchased Surface Water

System ID

TX1010536

JACKRABBIT ROAD PUD
Population Served

8,346

Water Source

Purchased Surface Water

System ID

TX1010538

HARRIS COUNTY MUD 1
Population Served

12,342

Water Source

Groundwater

System ID

TX1010539

EMERALD FOREST UTILITY DISTRICT
Population Served

7,326

Water Source

Groundwater

System ID

TX1010541

HEATHERLOCH MUD
Population Served

6,612

Water Source

Purchased Surface Water

System ID

TX1010548

GREENWOOD UTILITY DISTRICT
Population Served

10,527

Water Source

Purchased Surface Water

System ID

TX1010554

HARRIS COUNTY MUD 43
Population Served

5,940

Water Source

Groundwater

System ID

TX1010565

HARRIS COUNTY MUD 24
Population Served

14,796

Water Source

Purchased Surface Water

System ID

TX1010572

HARRIS COUNTY MUD 81
Population Served

11,514

Water Source

Groundwater

System ID

TX1010581

DOWDELL PUD
Population Served

6,705

Water Source

Groundwater

System ID

TX1010592

NORTHWEST PARK MUD
Population Served

18,168

Water Source

Groundwater

System ID

TX1010593

HARRIS COUNTY MUD 136
Population Served

1,062

Water Source

Purchased Surface Water

System ID

TX1010599

HARRIS COUNTY MUD 69
Population Served

4,458

Water Source

Groundwater

System ID

TX1010600

HUNTERS GLEN MUD
Population Served

9,405

Water Source

Groundwater

System ID

TX1010615

HARRIS COUNTY MUD 132
Population Served

8,682

Water Source

Groundwater

System ID

TX1010616

TRAIL OF THE LAKES MUD
Population Served

9,471

Water Source

Groundwater

System ID

TX1010617

HARRIS COUNTY MUD 109
Population Served

9,501

Water Source

Groundwater

System ID

TX1010620

TATTOR ROAD MUD
Population Served

5,400

Water Source

Groundwater

System ID

TX1010625

HARRIS COUNTY MUD 119
Population Served

4,758

Water Source

Groundwater

System ID

TX1010626

HARRIS COUNTY MUD 82
Population Served

18,990

Water Source

Groundwater

System ID

TX1010630

POSTWOOD MUD
Population Served

3,747

Water Source

Groundwater

System ID

TX1010631

CHARTERWOOD MUD
Population Served

5,832

Water Source

Groundwater

System ID

TX1010632

WESTON MUD
Population Served

6,699

Water Source

Groundwater

System ID

TX1010634

WESTLAKE MUD 1
Population Served

3,909

Water Source

Groundwater

System ID

TX1010635

HARRIS COUNTY MUD 23
Population Served

3,170

Water Source

Purchased Surface Water

System ID

TX1010649

SPENCER ROAD PUD
Population Served

5,607

Water Source

Purchased Surface Water

System ID

TX1010654

HARRIS COUNTY MUD 55 HERITAGE PARK
Population Served

16,392

Water Source

Purchased Surface Water

System ID

TX1010678

HARRIS COUNTY WCID 99
Population Served

2,343

Water Source

Groundwater

System ID

TX1010684

ENCANTO REAL UTILITY DISTRICT
Population Served

3,717

Water Source

Groundwater

System ID

TX1010687

HARRIS COUNTY MUD 8
Population Served

3,271

Water Source

Purchased Surface Water

System ID

TX1010712

HARRIS COUNTY MUD 26
Population Served

16,518

Water Source

Groundwater

System ID

TX1010715

HARRIS COUNTY MUD 44
Population Served

2,301

Water Source

Groundwater

System ID

TX1010718

HARRIS COUNTY MUD 53
Population Served

17,856

Water Source

Purchased Surface Water

System ID

TX1010720

HARRIS COUNTY MUD 61
Population Served

2,016

Water Source

Groundwater

System ID

TX1010721

MOUNT HOUSTON ROAD MUD
Population Served

5,346

Water Source

Groundwater

System ID

TX1010728

NORTH PARK PUD
Population Served

6,708

Water Source

Groundwater

System ID

TX1010745

PARKWAY UTILITY DISTRICT
Population Served

7,323

Water Source

Groundwater

System ID

TX1010750

SUNBELT FWSD WOODLAND OAKS SUBDIVISION
Population Served

4,527

Water Source

Purchased Surface Water

System ID

TX1010758

CHELFORD ONE MUD
Population Served

4,557

Water Source

Groundwater

System ID

TX1010767

HARRIS COUNTY MUD 120
Population Served

10,983

Water Source

Groundwater

System ID

TX1010774

CHELFORD CITY MUD
Population Served

8,917

Water Source

Groundwater

System ID

TX1010782

REID ROAD MUD 1
Population Served

6,969

Water Source

Groundwater

System ID

TX1010872

BISSONNET MUD
Population Served

8,160

Water Source

Groundwater

System ID

TX1010883

NORTHWEST HARRIS COUNTY MUD 5
Population Served

23,766

Water Source

Purchased Surface Water

System ID

TX1010884

HARRIS COUNTY MUD 118
Population Served

6,678

Water Source

Groundwater

System ID

TX1010897

PINE VILLAGE PUD
Population Served

3,498

Water Source

Purchased Surface Water

System ID

TX1010901

HARRIS COUNTY MUD 152
Population Served

7,314

Water Source

Groundwater

System ID

TX1010902

HARRIS COUNTY MUD 46
Population Served

5,418

Water Source

Groundwater

System ID

TX1010903

HARRIS COUNTY MUD 151
Population Served

7,464

Water Source

Groundwater

System ID

TX1010905

RICE UNIVERSITY
Population Served

8,415

Water Source

Purchased Surface Water

System ID

TX1010908

CHIMNEY HILL MUD
Population Served

5,409

Water Source

Purchased Surface Water

System ID

TX1010910

CYPRESS FOREST PUD
Population Served

7,356

Water Source

Groundwater

System ID

TX1010919

HARRIS COUNTY MUD 144
Population Served

3,219

Water Source

Purchased Surface Water

System ID

TX1010923

WINDFERN FOREST UTILITY DISTRICT
Population Served

7,170

Water Source

Purchased Surface Water

System ID

TX1010924

WEST HARRIS COUNTY MUD 1
Population Served

1,581

Water Source

Purchased Groundwater

System ID

TX1010925

HARRIS COUNTY MUD 148 KINGSLAKE
Population Served

5,448

Water Source

Purchased Surface Water

System ID

TX1010938

NORTHWEST HARRIS COUNTY MUD 6
Population Served

2,256

Water Source

Purchased Surface Water

System ID

TX1011008

ADDICKS UTILITY DISTRICT
Population Served

7,017

Water Source

Purchased Surface Water

System ID

TX1011019

WEST HARRIS COUNTY MUD 2 CHASE
Population Served

6,921

Water Source

Groundwater

System ID

TX1011029

MILLS ROAD MUD
Population Served

6,717

Water Source

Purchased Surface Water

System ID

TX1011107

KLEIN PUD
Population Served

3,504

Water Source

Groundwater

System ID

TX1011143

HARRIS COUNTY MUD 33
Population Served

5,181

Water Source

Groundwater

System ID

TX1011162

TERRANOVA WEST MUD
Population Served

3,120

Water Source

Purchased Surface Water

System ID

TX1011226

HARRIS COUNTY MUD 105
Population Served

14,151

Water Source

Purchased Surface Water

System ID

TX1011227

WOODCREEK MUD
Population Served

3,192

Water Source

Groundwater

System ID

TX1011237

WHITE OAK BEND MUD
Population Served

2,520

Water Source

Groundwater

System ID

TX1011238

HARRIS COUNTY MUD 147
Population Served

3,003

Water Source

Groundwater

System ID

TX1011243

LANGHAM CREEK UTILITY DISTRICT
Population Served

10,377

Water Source

Purchased Surface Water

System ID

TX1011249

HARRIS COUNTY MUD 150
Population Served

8,454

Water Source

Purchased Surface Water

System ID

TX1011250

FOREST HILLS MUD
Population Served

2,955

Water Source

Groundwater

System ID

TX1011252

NORTHWEST FREEWAY MUD
Population Served

3,678

Water Source

Groundwater

System ID

TX1011256

WEST HARRIS COUNTY MUD 6
Population Served

3,435

Water Source

Groundwater

System ID

TX1011258

HARRIS COUNTY MUD 149
Population Served

3,543

Water Source

Groundwater

System ID

TX1011296

CIMARRON MUD
Population Served

19,338

Water Source

Groundwater

System ID

TX1011410

HARRIS COUNTY MUD 157
Population Served

12,087

Water Source

Purchased Surface Water

System ID

TX1011430

HARRIS COUNTY MUD 49
Population Served

10,893

Water Source

Purchased Surface Water

System ID

TX1011462

HARRIS COUNTY MUD 64
Population Served

6,726

Water Source

Groundwater

System ID

TX1011513

CY CHAMP PUD
Population Served

7,596

Water Source

Groundwater

System ID

TX1011522

HARRIS COUNTY MUD 104
Population Served

4,449

Water Source

Purchased Surface Water

System ID

TX1011534

BRIDGESTONE MUD
Population Served

24,528

Water Source

Purchased Surface Water

System ID

TX1011550

CITY OF HOUSTON DISTRICT 73
Population Served

6,105

Water Source

Groundwater

System ID

TX1011585

CITY OF HOUSTON DISTRICT 82
Population Served

1,104

Water Source

Groundwater

System ID

TX1011593

NORTHWEST HARRIS COUNTY MUD 9
Population Served

7,848

Water Source

Groundwater

System ID

TX1011599

NORTHWEST HARRIS COUNTY MUD 15
Population Served

6,915

Water Source

Groundwater

System ID

TX1011600

NORTHWEST HARRIS COUNTY MUD 16
Population Served

2,742

Water Source

Groundwater

System ID

TX1011603

HARRIS COUNTY MUD 162
Population Served

2,661

Water Source

Purchased Surface Water

System ID

TX1011612

BARKER CYPRESS MUD
Population Served

8,976

Water Source

Purchased Surface Water

System ID

TX1011613

HARRIS COUNTY MUD 154
Population Served

8,289

Water Source

Groundwater

System ID

TX1011642

NORTHWEST HARRIS COUNTY MUD 10
Population Served

7,671

Water Source

Groundwater

System ID

TX1011649

HARRIS COUNTY MUD 65
Population Served

6,330

Water Source

Groundwater

System ID

TX1011678

FRY ROAD MUD
Population Served

3,696

Water Source

Groundwater

System ID

TX1011679

CLAY ROAD MUD
Population Served

4,443

Water Source

Purchased Surface Water

System ID

TX1011681

MORTON ROAD MUD
Population Served

2,817

Water Source

Purchased Surface Water

System ID

TX1011685

MAYDE CREEK MUD
Population Served

5,100

Water Source

Groundwater

System ID

TX1011689

HARRIS COUNTY MUD 70
Population Served

5,763

Water Source

Purchased Surface Water

System ID

TX1011690

CORNERSTONES MUD
Population Served

5,331

Water Source

Groundwater

System ID

TX1011692

HARRIS COUNTY MUD 16
Population Served

5,982

Water Source

Purchased Surface Water

System ID

TX1011705

MISSION BEND MUD 1
Population Served

6,546

Water Source

Groundwater

System ID

TX1011718

NORTH BELT UTILITY DISTRICT
Population Served

2,775

Water Source

Groundwater

System ID

TX1011737

LAKE MUD
Population Served

6,048

Water Source

Purchased Surface Water

System ID

TX1011741

NORTHWEST HARRIS COUNTY MUD 21
Population Served

2,493

Water Source

Purchased Surface Water

System ID

TX1011744

NORTHWEST HARRIS COUNTY MUD 22
Population Served

3,156

Water Source

Purchased Surface Water

System ID

TX1011745

NORTHWEST HARRIS COUNTY MUD 23
Population Served

4,470

Water Source

Groundwater

System ID

TX1011746

HARRIS COUNTY UD 15
Population Served

3,489

Water Source

Purchased Groundwater

System ID

TX1011778

HARRIS COUNTY UD 14
Population Served

2,769

Water Source

Groundwater

System ID

TX1011781

HORSEPEN BAYOU MUD
Population Served

6,597

Water Source

Purchased Surface Water

System ID

TX1011785

WEST HARRIS COUNTY MUD 9
Population Served

5,961

Water Source

Groundwater

System ID

TX1011798

HARRIS COUNTY MUD 180
Population Served

5,892

Water Source

Groundwater

System ID

TX1011799

HARRIS COUNTY MUD 189
Population Served

6,906

Water Source

Groundwater

System ID

TX1011809

HARRIS COUNTY MUD 71
Population Served

17,079

Water Source

Groundwater

System ID

TX1011823

HARRIS COUNTY MUD 183
Population Served

3,981

Water Source

Purchased Surface Water

System ID

TX1011824

WEST HARRIS COUNTY MUD 4
Population Served

1,581

Water Source

Groundwater

System ID

TX1011825

MISSION BEND MUD 2
Population Served

10,155

Water Source

Groundwater

System ID

TX1011826

CASTLEWOOD MUD
Population Served

2,505

Water Source

Groundwater

System ID

TX1011833

RENN ROAD MUD
Population Served

4,464

Water Source

Groundwater

System ID

TX1011834

GREEN TRAILS MUD
Population Served

2,982

Water Source

Groundwater

System ID

TX1011839

HARRIS COUNTY MUD 179
Population Served

5,115

Water Source

Purchased Surface Water

System ID

TX1011848

LOUETTA NORTH PUD
Population Served

4,836

Water Source

Purchased Surface Water

System ID

TX1011870

BILMA PUD
Population Served

5,397

Water Source

Purchased Surface Water

System ID

TX1011872

NORTHWEST HARRIS COUNTY MUD 12
Population Served

7,839

Water Source

Groundwater

System ID

TX1011901

CITY OF HOUSTON WILLOW CHASE
Population Served

14,169

Water Source

Groundwater

System ID

TX1011902

HARRIS COUNTY MUD 368
Population Served

11,835

Water Source

Purchased Surface Water

System ID

TX1011908

SOUTHWEST HARRIS COUNTY MUD 1
Population Served

1,581

Water Source

Purchased Surface Water

System ID

TX1011911

HARRIS COUNTY MUD 185
Population Served

4,617

Water Source

Purchased Surface Water

System ID

TX1011914

NORTHWEST HARRIS COUNTY MUD 19
Population Served

5,535

Water Source

Groundwater

System ID

TX1011927

WEST PARK MUD
Population Served

8,106

Water Source

Groundwater

System ID

TX1011930

HARRIS COUNTY MUD 188
Population Served

9,453

Water Source

Purchased Surface Water

System ID

TX1011982

HARRIS COUNTY MUD 217
Population Served

2,538

Water Source

Purchased Surface Water

System ID

TX1011983

GRANT ROAD PUD
Population Served

3,393

Water Source

Purchased Surface Water

System ID

TX1011991

NORTHWEST HARRIS COUNTY MUD 20
Population Served

3,429

Water Source

Groundwater

System ID

TX1011998

HARRIS COUNTY MUD 36
Population Served

1,464

Water Source

Groundwater

System ID

TX1012000

WEST HARRIS COUNTY MUD 14
Population Served

2,727

Water Source

Purchased Surface Water

System ID

TX1012002

HARRIS COUNTY MUD 200 CRANBROOK
Population Served

14,868

Water Source

Purchased Surface Water

System ID

TX1012007

WEST HARRIS COUNTY MUD 10
Population Served

6,697

Water Source

Groundwater

System ID

TX1012068

BEECHNUT MUD
Population Served

2,451

Water Source

Groundwater

System ID

TX1012082

HARRIS COUNTY MUD 130
Population Served

4,572

Water Source

Purchased Surface Water

System ID

TX1012097

HARRIS COUNTY MUD 153
Population Served

8,013

Water Source

Groundwater

System ID

TX1012133

HARRIS COUNTY MUD 165
Population Served

30,483

Water Source

Purchased Surface Water

System ID

TX1012187

HARRIS COUNTY MUD 163
Population Served

5,487

Water Source

Purchased Surface Water

System ID

TX1012213

HARRIS COUNTY MUD 186
Population Served

4,005

Water Source

Purchased Surface Water

System ID

TX1012214

RICEWOOD MUD
Population Served

4,989

Water Source

Groundwater

System ID

TX1012227

WEST HARRIS COUNTY MUD 7
Population Served

5,289

Water Source

Groundwater

System ID

TX1012228

HARRIS COUNTY MUD 127
Population Served

5,247

Water Source

Purchased Surface Water

System ID

TX1012229

WEST HARRIS COUNTY MUD 17
Population Served

3,354

Water Source

Groundwater

System ID

TX1012238

INTERSTATE MUD
Population Served

6,591

Water Source

Groundwater

System ID

TX1012264

HARRIS COUNTY MUD 62
Population Served

3,519

Water Source

Groundwater

System ID

TX1012285

NORTHWEST HARRIS COUNTY MUD 29
Population Served

3,000

Water Source

Groundwater

System ID

TX1012293

HARRIS COUNTY MUD 158
Population Served

6,798

Water Source

Purchased Groundwater

System ID

TX1012297

NOTTINGHAM COUNTRY MUD
Population Served

7,089

Water Source

Groundwater

System ID

TX1012315

HARRIS COUNTY MUD 264
Population Served

3,573

Water Source

Purchased Surface Water

System ID

TX1012330

HARRIS COUNTY MUD 155
Population Served

2,829

Water Source

Purchased Surface Water

System ID

TX1012351

RANKIN ROAD WEST MUD
Population Served

2,838

Water Source

Purchased Surface Water

System ID

TX1012354

HARRIS COUNTY MUD 202
Population Served

2,940

Water Source

Groundwater

System ID

TX1012356

HARRIS COUNTY WCID 89
Population Served

9,033

Water Source

Purchased Surface Water

System ID

TX1012370

CYPRESS HILL MUD 1
Population Served

11,052

Water Source

Groundwater

System ID

TX1012378

HARRIS COUNTY MUD 122
Population Served

1,158

Water Source

Purchased Surface Water

System ID

TX1012391

HARRIS COUNTY MUD 239
Population Served

5,583

Water Source

Groundwater

System ID

TX1012392

LONGHORN TOWN UTILITY DISTRICT
Population Served

1,788

Water Source

Groundwater

System ID

TX1012408

HARRIS COUNTY MUD 208
Population Served

3,642

Water Source

Purchased Surface Water

System ID

TX1012419

HARRIS COUNTY MUD 275
Population Served

1,428

Water Source

Groundwater

System ID

TX1012496

HARRIS COUNTY MUD 322
Population Served

4,266

Water Source

Purchased Groundwater

System ID

TX1012542

HARRIS COUNTY MUD 216
Population Served

3,627

Water Source

Groundwater

System ID

TX1012577

HARRIS COUNTY MUD 285
Population Served

14,268

Water Source

Purchased Surface Water

System ID

TX1012677

BAYBROOK MUD 1
Population Served

3,087

Water Source

Purchased Surface Water

System ID

TX1012698

HARRIS COUNTY MUD 205
Population Served

1,560

Water Source

Purchased Groundwater

System ID

TX1012704

HARRIS COUNTY MUD 230
Population Served

10,404

Water Source

Purchased Surface Water

System ID

TX1012740

HARRIS COUNTY MUD 255
Population Served

1,185

Water Source

Purchased Surface Water

System ID

TX1012766

HARRIS COUNTY MUD 345
Population Served

3,843

Water Source

Groundwater

System ID

TX1012768

HARRIS COUNTY MUD 215
Population Served

2,541

Water Source

Groundwater

System ID

TX1012812

HARRIS COUNTY MUD 278
Population Served

10,584

Water Source

Purchased Surface Water

System ID

TX1012835

HARRIS COUNTY MUD 167
Population Served

15,837

Water Source

Groundwater

System ID

TX1012842

NORTHWEST HARRIS COUNTY MUD 36
Population Served

3,648

Water Source

Purchased Surface Water

System ID

TX1012848

WEST HARRIS COUNTY MUD 11
Population Served

8,205

Water Source

Groundwater

System ID

TX1012858

KINGS MANOR MUD
Population Served

4,377

Water Source

Groundwater

System ID

TX1012865

HARRIS COUNTY MUD 261
Population Served

1,452

Water Source

Purchased Surface Water

System ID

TX1012866

ROLLING CREEK UTILITY DISTRICT
Population Served

5,388

Water Source

Purchased Surface Water

System ID

TX1012877

HARRIS COUNTY MUD 360
Population Served

4,707

Water Source

Groundwater

System ID

TX1012897

HARRIS COUNTY MUD 341
Population Served

2,421

Water Source

Purchased Surface Water

System ID

TX1012917

HARRIS COUNTY MUD 276
Population Served

5,094

Water Source

Purchased Surface Water

System ID

TX1012942

NORTHWEST HARRIS COUNTY MUD 30
Population Served

3,804

Water Source

Purchased Surface Water

System ID

TX1012951

HARRIS COUNTY MUD 86
Population Served

5,397

Water Source

Purchased Surface Water

System ID

TX1012953

BAKER ROAD MUD
Population Served

1,062

Water Source

Purchased Groundwater

System ID

TX1012962

HARRIS COUNTY MUD 354
Population Served

6,588

Water Source

Purchased Groundwater

System ID

TX1012965

HARRIS COUNTY MUD 172
Population Served

4,404

Water Source

Purchased Surface Water

System ID

TX1012970

HARRIS COUNTY MUD 173
Population Served

3,894

Water Source

Purchased Surface Water

System ID

TX1012971

HARRIS COUNTY MUD 221
Population Served

4,839

Water Source

Groundwater

System ID

TX1012972

HARRIS COUNTY MUD 342
Population Served

4,035

Water Source

Purchased Groundwater

System ID

TX1012973

HARRIS COUNTY MUD 344
Population Served

4,518

Water Source

Purchased Surface Water

System ID

TX1012974

OAKMONT PUD
Population Served

3,450

Water Source

Groundwater

System ID

TX1012981

HARRIS COUNTY MUD 257
Population Served

3,501

Water Source

Purchased Surface Water

System ID

TX1012985

HARRIS COUNTY MUD 196
Population Served

7,026

Water Source

Purchased Surface Water

System ID

TX1013002

HARRIS COUNTY MUD 365
Population Served

4,461

Water Source

Groundwater

System ID

TX1013009

SPRING WEST MUD
Population Served

2,639

Water Source

Groundwater

System ID

TX1013017

NORTHWEST HARRIS COUNTY MUD 32
Population Served

5,016

Water Source

Groundwater

System ID

TX1013034

HARRIS COUNTY MUD 367
Population Served

6,759

Water Source

Purchased Surface Water

System ID

TX1013040

HARRIS COUNTY MUD 222
Population Served

6,129

Water Source

Groundwater

System ID

TX1013054

HARRIS COUNTY MUD 280
Population Served

2,898

Water Source

Purchased Groundwater

System ID

TX1013063

REMINGTON MUD 1
Population Served

13,743

Water Source

Purchased Surface Water

System ID

TX1013074

NORTHGATE CROSSING MUD 1
Population Served

3,906

Water Source

Groundwater

System ID

TX1013077

NORTHGATE CROSSING MUD 2
Population Served

3,753

Water Source

Groundwater

System ID

TX1013078

HARRIS COUNTY MUD 371
Population Served

2,577

Water Source

Purchased Surface Water

System ID

TX1013107

HARRIS COUNTY MUD 370
Population Served

4,452

Water Source

Purchased Surface Water

System ID

TX1013113

HARRIS COUNTY MUD 284
Population Served

4,506

Water Source

Groundwater

System ID

TX1013114

HARRIS COUNTY MUD 364
Population Served

6,168

Water Source

Purchased Groundwater

System ID

TX1013132

HARRIS COUNTY MUD 249
Population Served

3,420

Water Source

Groundwater

System ID

TX1013135

HARRIS COUNTY MUD 372
Population Served

2,613

Water Source

Purchased Surface Water

System ID

TX1013141

HARRIS COUNTY WCID 156
Population Served

1,116

Water Source

Purchased Surface Water

System ID

TX1013147

HARRIS COUNTY UD 16
Population Served

6,063

Water Source

Groundwater

System ID

TX1013156

HARRIS COUNTY MUD 106
Population Served

4,668

Water Source

Groundwater

System ID

TX1013160

HARRIS COUNTY WCID 96
Population Served

10,530

Water Source

Groundwater

System ID

TX1013175

HARRIS COUNTY MUD 281
Population Served

3,573

Water Source

Groundwater

System ID

TX1013178

HARRIS COUNTY MUD 166
Population Served

4,239

Water Source

Purchased Surface Water

System ID

TX1013181

HARRIS COUNTY MUD 383
Population Served

4,881

Water Source

Purchased Surface Water

System ID

TX1013213

HARRIS COUNTY MUD 391
Population Served

8,835

Water Source

Groundwater

System ID

TX1013253

NORTHWEST HARRIS COUNTY MUD 28
Population Served

1,605

Water Source

Purchased Surface Water

System ID

TX1013258

SPRING MEADOWS MUD
Population Served

4,200

Water Source

Purchased Surface Water

System ID

TX1013261

HARRIS COUNTY MUD 389
Population Served

2,676

Water Source

Groundwater

System ID

TX1013265

HARRIS COUNTY MUD 401
Population Served

3,813

Water Source

Groundwater

System ID

TX1013289

HARRIS COUNTY MUD 290
Population Served

8,259

Water Source

Purchased Groundwater

System ID

TX1013294

HARRIS COUNTY MUD 397
Population Served

4,413

Water Source

Purchased Groundwater

System ID

TX1013295

HARRIS MONTGOMERY COUNTIES MUD 386
Population Served

18,018

Water Source

Purchased Groundwater

System ID

TX1013305

HARRIS COUNTY MUD 400 - WEST
Population Served

5,217

Water Source

Purchased Surface Water

System ID

TX1013310

HARRIS COUNTY MUD 220
Population Served

1,773

Water Source

Purchased Surface Water

System ID

TX1013321

HARRIS COUNTY MUD 156
Population Served

2,082

Water Source

Purchased Surface Water

System ID

TX1013327

HARRIS COUNTY MUD 419
Population Served

7,389

Water Source

Purchased Groundwater

System ID

TX1013335

HARRIS COUNTY MUD 396
Population Served

3,201

Water Source

Purchased Groundwater

System ID

TX1013338

HARRIS COUNTY MUD 96
Population Served

6,993

Water Source

Purchased Surface Water

System ID

TX1013343

HARRIS COUNTY MUD 399
Population Served

2,967

Water Source

Purchased Groundwater

System ID

TX1013346

HARRIS COUNTY MUD 433
Population Served

6,651

Water Source

Purchased Surface Water

System ID

TX1013350

HARRIS COUNTY MUD 412
Population Served

3,480

Water Source

Purchased Surface Water

System ID

TX1013354

WEST HARRIS COUNTY MUD 5
Population Served

2,370

Water Source

Groundwater

System ID

TX1013356

HARRIS-FORT BEND COUNTIES MUD 3
Population Served

7,971

Water Source

Groundwater

System ID

TX1013365

HARRIS COUNTY MUD 468
Population Served

7,683

Water Source

Purchased Surface Water

System ID

TX1013369

HARRIS COUNTY MUD 449
Population Served

7,179

Water Source

Groundwater

System ID

TX1013372

HARRIS COUNTY MUD 434
Population Served

2,859

Water Source

Groundwater

System ID

TX1013373

HARRIS COUNTY MUD 282
Population Served

3,237

Water Source

Purchased Groundwater

System ID

TX1013375

HARRIS COUNTY MUD 421
Population Served

1,269

Water Source

Purchased Surface Water

System ID

TX1013376

HARRIS COUNTY MUD 432
Population Served

4,782

Water Source

Groundwater

System ID

TX1013378

HARRIS COUNTY MUD 287
Population Served

3,510

Water Source

Purchased Groundwater

System ID

TX1013385

GENERATION PARK MANAGEMENT DISTRICT
Population Served

1,687

Water Source

Purchased Surface Water

System ID

TX1013387

HARRIS COUNTY MUD 500
Population Served

1,158

Water Source

Purchased Surface Water

System ID

TX1013390

HARRIS COUNTY MUD 420
Population Served

1,941

Water Source

Purchased Surface Water

System ID

TX1013399

HARRIS COUNTY MUD 480
Population Served

2,964

Water Source

Groundwater

System ID

TX1013400

HARRIS COUNTY MUD 501
Population Served

4,740

Water Source

Purchased Surface Water

System ID

TX1013403

HARRIS COUNTY MUD 400 - EAST
Population Served

6,066

Water Source

Purchased Surface Water

System ID

TX1013416

NORTHEAST HARRIS COUNTY MUD 1 SHELDON RI
Population Served

1,788

Water Source

Purchased Groundwater

System ID

TX1013448

NORTHEAST HARRIS COUNTY MUD 1 EDGEWOOD V
Population Served

1,842

Water Source

Purchased Surface Water

System ID

TX1013449

HARRIS COUNTY MUD 374 CYPRESS CREEK LAKE
Population Served

5,526

Water Source

Purchased Groundwater

System ID

TX1013450

HARRIS COUNTY IMPROVEMENT DISTRICT 18
Population Served

5,025

Water Source

Groundwater

System ID

TX1013479

HARRIS COUNTY MUD 502
Population Served

5,487

Water Source

Purchased Surface Water

System ID

TX1013494

HARRIS COUNTY MUD 494
Population Served

1,944

Water Source

Purchased Groundwater

System ID

TX1013511

HARRIS COUNTY MUD 536
Population Served

4,188

Water Source

Groundwater

System ID

TX1013515

HARRIS COUNTY MUD 504
Population Served

7,242

Water Source

Purchased Surface Water

System ID

TX1013522

HARRIS COUNTY MUD 530
Population Served

1,959

Water Source

Groundwater

System ID

TX1013530

HARRIS COUNTY MUD 531
Population Served

2,421

Water Source

Groundwater

System ID

TX1013531

HARRIS COUNTY MUD 495
Population Served

5,007

Water Source

Groundwater

System ID

TX1013532

HARRIS COUNTY MUD 319
Population Served

5,751

Water Source

Groundwater

System ID

TX1013563

HARRIS COUNTY MUD 542
Population Served

2,592

Water Source

Groundwater

System ID

TX1013573

HARRIS COUNTY MUD 457
Population Served

5,967

Water Source

Purchased Groundwater

System ID

TX1013576

HARRIS COUNTY MUD 537
Population Served

1,416

Water Source

Purchased Surface Water

System ID

TX1013586

HARRIS COUNTY WCID 161
Population Served

3,129

Water Source

Purchased Surface Water

System ID

TX1013612

HARRIS COUNTY MUD 489
Population Served

10,476

Water Source

Purchased Groundwater

System ID

TX1013628

HARRIS COUNTY MUD 422
Population Served

2,307

Water Source

Purchased Surface Water

System ID

TX1013632

HARRIS COUNTY MUD 465
Population Served

1,026

Water Source

Groundwater

System ID

TX1013674

HARRIS COUNTY MUD 551
Population Served

1,269

Water Source

Purchased Surface Water

System ID

TX1013688

HARRIS COUNTY MUD 423
Population Served

4,044

Water Source

Purchased Surface Water

System ID

TX1013691

HARRIS COUNTY MUD 213-A
Population Served

1,926

Water Source

Purchased Surface Water

System ID

TX1013695

HARRIS COUNTY MUD 558
Population Served

3,300

Water Source

Purchased Groundwater

System ID

TX1013698

HARRIS COUNTY MUD 490
Population Served

1,293

Water Source

Purchased Surface Water

System ID

TX1013721

HARRIS COUNTY MUD 559
Population Served

1,470

Water Source

Groundwater

System ID

TX1013762

HARRIS COUNTY MUD 570C
Population Served

1,113

Water Source

Purchased Groundwater

System ID

TX1013800

HARRIS COUNTY MUD 547
Population Served

1,074

Water Source

Purchased Groundwater

System ID

TX1013827

HARRIS COUNTY MUD 552
Population Served

1,683

Water Source

Purchased Surface Water

System ID

TX1013843

FAR HILLS UTILITY DISTRICT
Population Served

1,596

Water Source

Groundwater

System ID

TX1700011

POINT AQUARIUS MUD
Population Served

3,228

Water Source

Groundwater

System ID

TX1700060

SOUTHERN MONTGOMERY COUNTY MUD
Population Served

13,372

Water Source

Purchased Surface Water

System ID

TX1700073

MONTGOMERY COUNTY UD 2
Population Served

3,381

Water Source

Groundwater

System ID

TX1700115

MONTGOMERY COUNTY UD 3
Population Served

3,825

Water Source

Groundwater

System ID

TX1700116

MONTGOMERY COUNTY MUD 15
Population Served

6,564

Water Source

Groundwater

System ID

TX1700118

LAKE CONROE HILLS MUD
Population Served

2,058

Water Source

Groundwater

System ID

TX1700140

CORINTHIAN POINT MUD 2
Population Served

1,086

Water Source

Groundwater

System ID

TX1700152

MONTGOMERY COUNTY MUD 8
Population Served

5,472

Water Source

Groundwater

System ID

TX1700176

MONTGOMERY COUNTY MUD 9
Population Served

5,949

Water Source

Groundwater

System ID

TX1700220

MONTGOMERY COUNTY MUD 24
Population Served

1,956

Water Source

Groundwater

System ID

TX1700269

MONTGOMERY COUNTY UD 4
Population Served

4,980

Water Source

Groundwater

System ID

TX1700286

MONTGOMERY COUNTY MUD 19
Population Served

4,422

Water Source

Groundwater

System ID

TX1700319

RAYFORD ROAD MUD
Population Served

11,550

Water Source

Purchased Surface Water

System ID

TX1700334

PINEHURST DECKER PRAIRIE WSC
Population Served

1,287

Water Source

Groundwater

System ID

TX1700507

MONTGOMERY COUNTY MUD 83
Population Served

2,208

Water Source

Groundwater

System ID

TX1700581

WOOD TRACE MUD 1
Population Served

3,084

Water Source

Groundwater

System ID

TX1700642

EAST MONTGOMERY COUNTY MUD 3
Population Served

2,250

Water Source

Groundwater

System ID

TX1700705

MONTGOMERY COUNTY MUD 94
Population Served

5,184

Water Source

Groundwater

System ID

TX1700716

MONTGOMERY COUNTY MUD 89
Population Served

4,899

Water Source

Groundwater

System ID

TX1700717

EAST MONTGOMERY COUNTY MUD 4
Population Served

1,500

Water Source

Groundwater

System ID

TX1700741

MONTGOMERY COUNTY MUD 84
Population Served

2,553

Water Source

Purchased Groundwater

System ID

TX1700743

MONTGOMERY COUNTY MUD 98
Population Served

2,766

Water Source

Purchased Surface Water

System ID

TX1700746

MONTGOMERY COUNTY MUD 99
Population Served

3,675

Water Source

Purchased Surface Water

System ID

TX1700749

VALLEY RANCH MUD 1
Population Served

4,056

Water Source

Purchased Groundwater

System ID

TX1700752

EAST MONTGOMERY COUNTY MUD 6
Population Served

3,939

Water Source

Purchased Groundwater

System ID

TX1700753

GRAND OAKS MUD
Population Served

2,013

Water Source

Purchased Groundwater

System ID

TX1700757

MONTGOMERY COUNTY MUD 112
Population Served

5,454

Water Source

Groundwater

System ID

TX1700762

MONTGOMERY COUNTY MUD 115
Population Served

4,599

Water Source

Purchased Groundwater

System ID

TX1700770

MONTGOMERY COUNTY MUD 119 SPRING TRAILS
Population Served

6,621

Water Source

Groundwater

System ID

TX1700773

MONTGOMERY COUNTY MUD 95
Population Served

6,435

Water Source

Purchased Surface Water

System ID

TX1700779

HARRIS MONTGOMERY COUNTIES MUD 386 MAY V
Population Served

2,364

Water Source

Purchased Surface Water

System ID

TX1700796

MONTGOMERY COUNTY MUD 139
Population Served

5,523

Water Source

Groundwater

System ID

TX1700832

MONTGOMERY COUNTY MUD 105
Population Served

3,282

Water Source

Groundwater

System ID

TX1700837

MONTGOMERY COUNTY MUD 96
Population Served

2,334

Water Source

Groundwater

System ID

TX1700847

WOODRIDGE MUD
Population Served

1,407

Water Source

Purchased Groundwater

System ID

TX1700859

MONTGOMERY COUNTY MUD 127
Population Served

2,478

Water Source

Purchased Groundwater

System ID

TX1700860

EAST MONTGOMERY COUNTY MUD 7
Population Served

4,035

Water Source

Purchased Groundwater

System ID

TX1700881

MONTGOMERY COUNTY MUD 111
Population Served

2,502

Water Source

Purchased Groundwater

System ID

TX1700883

MONTGOMERY COUNTY MUD 164
Population Served

2,076

Water Source

Groundwater

System ID

TX1700894

EAST MONTGOMERY COUNTY MUD 12
Population Served

2,838

Water Source

Groundwater

System ID

TX1700898

MONTGOMERY COUNTY MUD 166
Population Served

1,443

Water Source

Purchased Surface Water

System ID

TX1700903

AUDUBON MUD 1
Population Served

2,049

Water Source

Groundwater

System ID

TX1700906

MONTGOMERY COUNTY MUD 145
Population Served

1,476

Water Source

Purchased Groundwater

System ID

TX1700930

MONTGOMERY COUNTY MUD 199
Population Served

1,203

Water Source

Groundwater

System ID

TX1700940

MONTGOMERY COUNTY MUD 138
Population Served

2,712

Water Source

Purchased Groundwater

System ID

TX1700988

MONTGOMERY COUNTY MUD 152A
Population Served

1,344

Water Source

Purchased Groundwater

System ID

TX1701014

MEMORIAL POINT UTILITIES DISTRICT
Population Served

1,285

Water Source

Groundwater

System ID

TX1870030

WILLOW CREEK FARMS MUD
Population Served

3,453

Water Source

Groundwater

System ID

TX2370089

WALLER COUNTY ROAD IMPROVEMENT DIST 1
Population Served

1,400

Water Source

Groundwater

System ID

TX2370094

HARRIS-WALLER COUNTIES MUD 5
Population Served

4,098

Water Source

Purchased Groundwater

System ID

TX2370138

Frequently Asked Questions About Houston Water

Is Houston tap water safe to drink?

Houston, Texas tap water receives a grade of A (91/100), which is considered excellent. Out of 80 contaminants tested, 3 exceed EPA maximum contaminant levels (MCLs) and 5 exceed health guidelines (MCLGs). While the water meets federal standards, some residents may still choose to use a filter for additional peace of mind.

What contaminants are in Houston's water?

Of the 80 contaminants tested in Houston's water supply, the most notable include Copper (90th percentile), Lead (90th percentile), PFOS, chlorate, 1,4-dioxane. 3 contaminant(s) exceed EPA legal limits (MCLs). 5 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.

Does Houston have any water quality violations?

Yes, Houston has 2530 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, MR, TT. 317 of these are health-based violations, which are the most serious category.

Do I need a water filter in Houston?

Based on EPA data, using a water filter in Houston is recommended. 3 contaminant(s) exceed legal limits. An NSF-certified filter — such as a reverse osmosis or activated carbon system — can effectively reduce many common contaminants. Choose a filter certified to remove the specific contaminants found in your area.

Where does Houston's tap water come from?

Houston's drinking water is sourced from groundwater and supplied by BRAZORIA COUNTY MUD 2 and 511 other water system(s). The system serves approximately 5,854,523 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.

How often is Houston's water tested?

Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. Houston's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.

How does Houston's water compare to other cities in Texas?

Houston's water quality score of 91/100 earns a grade of A, which is considered excellent. This places Houston among the better-performing water systems in Texas. Visit our Texas state page to see how all cities in the state compare.

What should I do if I'm concerned about Houston's water quality?

If you have concerns about Houston's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (BRAZORIA COUNTY MUD 2) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.

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