TapSafetyReport
D39/100

CITY OF BALTIMORE — Water Quality Report 2026

Serving 1,600,000 people · Maryland

Water Source
Surface Water
County
—
System ID
MD0300002
Violations
34

Contaminant Test Results

1 contaminant above EPA health goals
ContaminantDetectedLimit (MCL)Status
Lead (90th percentile)
0.003 mg/L0.015 mg/LAbove Goal

EPA Violation History

7

Violations (last 5yr)

0

Unresolved

1

Health-Related

TIER 3Resolved

Exceeded the MCL for disinfection byproducts

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: April 1, 2023 – June 30, 2023Enforcement: Resolving — corrective action underway
TIER 3Resolved

Exceeded the MCL for disinfection byproducts

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: April 1, 2023 – June 30, 2023Enforcement: Resolving — corrective action underway
TIER 3Resolved

Exceeded the MCL for disinfection byproducts

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: April 1, 2023 – June 30, 2023Enforcement: Resolving — corrective action underway
TIER 3Resolved

Exceeded the MCL for disinfection byproducts

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: April 1, 2023 – June 30, 2023Enforcement: Resolving — corrective action underway
TIER 3Resolved

Exceeded the MCL for disinfection byproducts

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: January 1, 2023 – December 31, 2023Enforcement: Resolving — corrective action underway
TIER 3Resolved

Disinfection byproduct treatment technique failure

When: September 5, 2022 – September 6, 2022Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 1 — URGENTResolved

Maximum Contaminant Level Violation

When: September 1, 2022 – September 30, 2022Rule: Total Coliform 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

Frequently Asked Questions About CITY OF BALTIMORE

Is CITY OF BALTIMORE water safe to drink?

CITY OF BALTIMORE water receives a grade of D (39/100), which is considered poor. 0 contaminant(s) exceed EPA legal limits and 34 violation(s) are on record. Customers may want to consider using a water filter.

What contaminants has CITY OF BALTIMORE detected?

76 contaminants were tested in CITY OF BALTIMORE's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).

Does CITY OF BALTIMORE have any EPA violations?

Yes, CITY OF BALTIMORE has 34 EPA violation(s) on record, with the most recent in 2023. Violation types include MR, Other, MCL. 6 are health-based violations.

How many people does CITY OF BALTIMORE serve?

CITY OF BALTIMORE serves approximately 1,600,000 people, Maryland.

What type of water does CITY OF BALTIMORE provide?

CITY OF BALTIMORE sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is MD0300002.

How does CITY OF BALTIMORE compare to other utilities in Maryland?

CITY OF BALTIMORE scores 39/100 with a grade of D (poor). This score suggests significant water quality concerns relative to other utilities. Visit our Maryland state page for a full comparison of water systems.