B77/100
SOUTHWEST HARRIS COUNTY MUD 1 — Water Quality Report 2026
Serving 1,581 people · Texas
Water Source
Purchased Surface Water
County
—
System ID
TX1011911
Violations
8
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.003 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
7
Violations (last 5yr)
0
Unresolved
3
Health-Related
TIER 3Resolved
Failed to issue ongoing public notification
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 1, 2024 – March 12, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Disinfection byproduct treatment technique failure
When: June 11, 2022 – July 19, 2022Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Disinfection byproduct treatment technique failure
When: June 11, 2022 – July 19, 2022Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 2Resolved
Consumer confidence report — content deficiency
When: April 1, 2022 – September 14, 2022Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 2Resolved
Consumer confidence report — content deficiency
When: March 31, 2022 – September 14, 2022Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Disinfection byproduct treatment technique failure
When: January 21, 2022 – March 15, 2022Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 2Resolved
Other non-health-based violation
When: December 1, 2021 – December 29, 2021Rule: Ground Water 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 SOUTHWEST HARRIS COUNTY MUD 1
Is SOUTHWEST HARRIS COUNTY MUD 1 water safe to drink?
SOUTHWEST HARRIS COUNTY MUD 1 water receives a grade of B (77/100), which is considered good. Out of 1 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has SOUTHWEST HARRIS COUNTY MUD 1 detected?
1 contaminants were tested in SOUTHWEST HARRIS COUNTY MUD 1's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does SOUTHWEST HARRIS COUNTY MUD 1 have any EPA violations?
Yes, SOUTHWEST HARRIS COUNTY MUD 1 has 8 EPA violation(s) on record, with the most recent in 2024. Violation types include MR, Other, TT. 3 are health-based violations.
How many people does SOUTHWEST HARRIS COUNTY MUD 1 serve?
SOUTHWEST HARRIS COUNTY MUD 1 serves approximately 1,581 people, Texas.
What type of water does SOUTHWEST HARRIS COUNTY MUD 1 provide?
SOUTHWEST HARRIS COUNTY MUD 1 sources its water from purchased surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is TX1011911.
How does SOUTHWEST HARRIS COUNTY MUD 1 compare to other utilities in Texas?
SOUTHWEST HARRIS COUNTY MUD 1 scores 77/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Texas state page for a full comparison of water systems.