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Weslaco, TX Tap Water Quality 2026

Water quality report for Weslaco, TX — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Weslaco's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: City Of Weslaco PWSID: TX1080011 Updated: 2026 Q2
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1 violation currently open

Lead is 1.50 ppb, 10% of the action level. PFAS was sampled but not enough times for a compliance determination.

C

Weslaco earns a C for water quality

Graded on violations and lead, with state inspection findings. PFAS not tested.

Lead: 1.50 ppb — 10% of the federal action level
PFAS sampled, too few results to judge
7 violations since 2015, 1 health-based
1 violation currently open
Weslaco's lead level vs. all Texas community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 1.50 ppb — 10% of the federal action level
✓ Lower lead than 57% of Texas utilities
Population Served
34243
~12361 connections
Water Source
Surface water
Drawn from surface water — SDWIS source code SW
Active Violations
1
1 open of 7 since 2015

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
10% of EPA action level
1.50 ppb
Action level: 15 ppb
The 90th-percentile lead result is 1.50 ppb, 10% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Public Notice OTHER — — 2026 Unaddressed
Public Notice OTHER — — 2025 Unaddressed
LEAD AND COPPER RULE REVISIONS TREATMENT TECHNIQUE — — 2024 Unaddressed
LEAD AND COPPER RULE REVISIONS REPORTING FAILURE — — 2024 Unaddressed
Consumer Confidence Rule OTHER — — 2022 Resolved
Consumer Confidence Rule OTHER — — 2020 Resolved
Public Notice OTHER — — 2015 Resolved
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

1 violation remains open, out of 7 recorded since 2015 (1 health-based).

About the Main Water System

Utility City Of Weslaco
PWSID TX1080011
Water source Surface water — Drawn from surface water — SDWIS source code SW
Population served 34,243
Service connections 12,361
Systems serving this area 6
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Weslaco tap water safe to drink? ▼
No federal limit is exceeded on record. 1 violation(s) remain open. Lead is 1.50 ppb, 10% of the action level.
Does Weslaco water have PFAS? ▼
It was sampled, but no sampling point had enough results for a compliance determination.
Who supplies water to Weslaco? ▼
City Of Weslaco (PWSID TX1080011), one of 6 systems serving this area. Surface water. Drawn from surface water — SDWIS source code SW
When was this system last inspected? ▼
It was last inspected on 2025-04-01. No significant deficiencies were recorded.

What Should Weslaco Residents Do?

1
Read your annual water report
Your supplier publishes a Consumer Confidence Report each July covering the prior year.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Follow the open violation
This system has an unresolved violation. Contact the supplier for its corrective-action schedule.

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