A96/100
WILLIAMSON COUNTY MUD 11 — Water Quality Report 2026
Serving 4,248 people · Texas
Water Source
Purchased Surface Water
County
—
System ID
TX2460159
Violations
1
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.005 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2013.
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 WILLIAMSON COUNTY MUD 11
Is WILLIAMSON COUNTY MUD 11 water safe to drink?
WILLIAMSON COUNTY MUD 11 water receives a grade of A (96/100), 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 WILLIAMSON COUNTY MUD 11 detected?
31 contaminants were tested in WILLIAMSON COUNTY MUD 11's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does WILLIAMSON COUNTY MUD 11 have any EPA violations?
Yes, WILLIAMSON COUNTY MUD 11 has 1 EPA violation(s) on record, with the most recent in 2013. Violation types include MR.
How many people does WILLIAMSON COUNTY MUD 11 serve?
WILLIAMSON COUNTY MUD 11 serves approximately 4,248 people, Texas.
What type of water does WILLIAMSON COUNTY MUD 11 provide?
WILLIAMSON COUNTY MUD 11 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 TX2460159.
How does WILLIAMSON COUNTY MUD 11 compare to other utilities in Texas?
WILLIAMSON COUNTY MUD 11 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.