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Willis, TX Tap Water Quality 2026

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

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

Main Utility: City Of Willis PWSID: TX1700003 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 0.70 ppb, 5% of the action level and no violations are open. PFAS was sampled but not enough times for a compliance determination.

B

Willis earns a B for water quality

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

Lead: 0.70 ppb — 5% of the federal action level
PFAS sampled, too few results to judge
31 violations since 2015, 2 health-based
No violations currently open
Willis's lead level vs. all Texas community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 0.70 ppb — 5% of the federal action level
✓ Lower lead than 92% of Texas utilities
Population Served
5409
~4711 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
31 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
5% of EPA action level
0.70 ppb
Action level: 15 ppb
The 90th-percentile lead result is 0.70 ppb, 5% 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
Revised Total Coliform Rule TREATMENT TECHNIQUE — — 2026 Resolved
Public Notice OTHER — — 2025 Resolved
Public Notice OTHER — — 2025 Unaddressed
Revised Total Coliform Rule MCL EXCEEDANCE — — 2025 Resolved
LEAD AND COPPER RULE REVISIONS REPORTING FAILURE — — 2025 Resolved
Consumer Confidence Rule OTHER — — 2025 Unaddressed
Lead and Copper Rule MONITORING AND REPORTING — TT 2024 Resolved
E. COLI MONITORING AND REPORTING — 0 2024 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2021–2023 Archived
Barium MONITORING AND REPORTING — 2 mg/L 2021–2023 Archived
Cadmium MONITORING AND REPORTING — 0.005 mg/L 2021–2023 Archived
Chromium MONITORING AND REPORTING — 0.1 mg/L 2021–2023 Archived
Mercury MONITORING AND REPORTING — 0.002 mg/L 2021–2023 Archived
Antimony, Total MONITORING AND REPORTING — 0.006 mg/L 2021–2023 Archived
Beryllium, Total MONITORING AND REPORTING — 0.004 mg/L 2021–2023 Archived
Thallium, Total MONITORING AND REPORTING — 0.002 mg/L 2021–2023 Archived
Selenium MONITORING AND REPORTING — 0.05 mg/L 2021–2023 Archived
Fluoride MONITORING AND REPORTING — 4.0 mg/L 2021–2023 Archived
OXAMYL MONITORING AND REPORTING — 0.2 mg/L 2021–2023 Archived
Aldicarb sulfoxide MONITORING AND REPORTING — — 2021–2023 Archived
Aldicarb sulfone MONITORING AND REPORTING — — 2021–2023 Archived
Carbofuran MONITORING AND REPORTING — 0.04 mg/L 2021–2023 Archived
Aldicarb MONITORING AND REPORTING — — 2021–2023 Archived
Dalapon MONITORING AND REPORTING — 0.2 mg/L 2021–2023 Archived
Picloram MONITORING AND REPORTING — 0.5 mg/L 2021–2023 Archived
Dinoseb MONITORING AND REPORTING — 0.007 mg/L 2021–2023 Archived
2,4-D MONITORING AND REPORTING — 0.07 mg/L 2021–2023 Archived
2,4,5-TP MONITORING AND REPORTING — 0.05 mg/L 2021–2023 Archived
1,2-DIBROMO-3-CHLOROPROPANE MONITORING AND REPORTING — 0.0002 mg/L 2021–2023 Archived
ETHYLENE DIBROMIDE MONITORING AND REPORTING — 0.00005 mg/L 2021–2023 Archived
CYANIDE MONITORING AND REPORTING — 0.2 mg/L 2021–2023 Archived
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

31 violations are on record since 2015, of which 2 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility City Of Willis
PWSID TX1700003
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 5,409
Service connections 4,711
Systems serving this area 8
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Willis tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 0.70 ppb, 5% of the action level.
Does Willis water have PFAS? ▼
It was sampled, but no sampling point had enough results for a compliance determination.
Who supplies water to Willis? ▼
City Of Willis (PWSID TX1700003), one of 8 systems serving this area. Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2025-10-28. No significant deficiencies were recorded.

What Should Willis 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
Flush before drinking
If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

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