A96/100
HARRIS COUNTY MUD 422 — Water Quality Report 2026
Serving 2,307 people · Texas
Water Source
Purchased Surface Water
County
—
System ID
TX1013632
Violations
1
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | < 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
1
Unresolved
0
Health-Related
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 422
Is HARRIS COUNTY MUD 422 water safe to drink?
HARRIS COUNTY MUD 422 water receives a grade of A (96/100), which is considered excellent. 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 HARRIS COUNTY MUD 422 detected?
1 contaminants were tested in HARRIS COUNTY MUD 422's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does HARRIS COUNTY MUD 422 have any EPA violations?
Yes, HARRIS COUNTY MUD 422 has 1 EPA violation(s) on record, with the most recent in 2024. Violation types include MR.
How many people does HARRIS COUNTY MUD 422 serve?
HARRIS COUNTY MUD 422 serves approximately 2,307 people, Texas.
What type of water does HARRIS COUNTY MUD 422 provide?
HARRIS COUNTY MUD 422 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 TX1013632.
How does HARRIS COUNTY MUD 422 compare to other utilities in Texas?
HARRIS COUNTY MUD 422 scores 96/100 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.