B62/100
CITY OF WESLACO — Water Quality Report 2026
Serving 40,033 people · Texas
Water Source
Surface Water
County
—
System ID
TX1080011
Violations
13
Contaminant Test Results
4 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
PFOS | 0.005 µg/L | 0.004 µg/L | Over Limit |
strontium | 1850.00 µg/L | — | Above Goal |
chlorate | 895.00 µg/L | — | Above Goal |
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
4
Violations (last 5yr)
3
Unresolved
1
Health-Related
TIER 3Unresolved
Disinfection byproduct treatment technique failure
When: May 1, 2025Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Unresolved
Reporting violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 17, 2024Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 2Unresolved
Treatment technique violation
When: October 17, 2024Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2022 – March 16, 2023Enforcement: 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 WESLACO
Is CITY OF WESLACO water safe to drink?
CITY OF WESLACO water receives a grade of B (62/100), which is considered good. Out of 69 contaminants tested, 1 exceed EPA legal limits. 4 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has CITY OF WESLACO detected?
69 contaminants were tested in CITY OF WESLACO's water. Notable contaminants include PFOS, Lead (90th percentile), strontium, chlorate. 1 exceed EPA legal limits (MCLs). 4 exceed EPA health goals (MCLGs).
Does CITY OF WESLACO have any EPA violations?
Yes, CITY OF WESLACO has 13 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, RPT, TT. 2 are health-based violations.
How many people does CITY OF WESLACO serve?
CITY OF WESLACO serves approximately 40,033 people, Texas.
What type of water does CITY OF WESLACO provide?
CITY OF WESLACO 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 TX1080011.
How does CITY OF WESLACO compare to other utilities in Texas?
CITY OF WESLACO scores 62/100 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.