A95/100
HARRIS COUNTY MUD 401 — Water Quality Report 2026
Serving 3,813 people · Texas
Water Source
Groundwater
County
—
System ID
TX1013289
Violations
2
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
2
Violations (last 5yr)
2
Unresolved
0
Health-Related
TIER 3Unresolved
Failed to conduct Level 1 Assessment
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: August 28, 2024Rule: Consumer Confidence RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Unresolved
Monitoring / Reporting Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2024 – June 30, 2024Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
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 HARRIS COUNTY MUD 401
Is HARRIS COUNTY MUD 401 water safe to drink?
HARRIS COUNTY MUD 401 water receives a grade of A (95/100), which is considered excellent. Out of 31 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has HARRIS COUNTY MUD 401 detected?
31 contaminants were tested in HARRIS COUNTY MUD 401's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does HARRIS COUNTY MUD 401 have any EPA violations?
Yes, HARRIS COUNTY MUD 401 has 2 EPA violation(s) on record, with the most recent in 2024. Violation types include MR.
How many people does HARRIS COUNTY MUD 401 serve?
HARRIS COUNTY MUD 401 serves approximately 3,813 people, Texas.
What type of water does HARRIS COUNTY MUD 401 provide?
HARRIS COUNTY MUD 401 sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is TX1013289.
How does HARRIS COUNTY MUD 401 compare to other utilities in Texas?
HARRIS COUNTY MUD 401 scores 95/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Texas state page for a full comparison of water systems.