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Cotulla, TX Tap Water Quality 2026

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

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

Main Utility: City Of Cotulla PWSID: TX1420001 Updated: 2026 Q2
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1 violation currently open

Lead was not detected. No PFAS was detected.

C

Cotulla earns a C for water quality

Graded on violations, lead, and PFAS, with state inspection findings.

Lead: not detected
PFAS tested, none detected
28 violations since 2015, 1 health-based
1 violation currently open
Cotulla's lead level vs. all Texas community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: Not detected — 0% of the federal action level
✓ Lower lead than % of Texas utilities
Population Served
3711
~1741 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
1
1 open of 28 since 2015

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
0% of EPA action level
Not detected
Action level: 15 ppb
Lead was not detected at the 90th percentile — the result fell below the laboratory detection limit. That is not the same as an absence of lead in every tap, and older homes with lead service lines can still show higher readings.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Consumer Confidence Rule OTHER — — 2025 Resolved
Public Notice OTHER — — 2025 Resolved
LEAD AND COPPER RULE REVISIONS TREATMENT TECHNIQUE — — 2024 Unaddressed
LEAD AND COPPER RULE REVISIONS REPORTING FAILURE — — 2024 Unaddressed
E. COLI MONITORING AND REPORTING — 0 2023 Resolved
Public Notice OTHER — — 2023 Resolved
E. COLI MONITORING AND REPORTING — 0 2022 Resolved
Endrin MONITORING AND REPORTING — 0.002 mg/L 2022–2024 Archived
BHC-GAMMA MONITORING AND REPORTING — 0.0002 mg/L 2022–2024 Archived
Methoxychlor MONITORING AND REPORTING — 0.04 mg/L 2022–2024 Archived
Toxaphene MONITORING AND REPORTING — 0.003 mg/L 2022–2024 Archived
Di(2-ethylhexyl) adipate MONITORING AND REPORTING — 0.4 mg/L 2022–2024 Archived
Simazine MONITORING AND REPORTING — 0.004 mg/L 2022–2024 Archived
Di(2-ethylhexyl) phthalate MONITORING AND REPORTING — 0.006 mg/L 2022–2024 Archived
Hexachlorocyclopentadiene MONITORING AND REPORTING — 0.05 mg/L 2022–2024 Archived
Atrazine MONITORING AND REPORTING — 0.003 mg/L 2022–2024 Archived
LASSO MONITORING AND REPORTING — — 2022–2024 Archived
Heptachlor MONITORING AND REPORTING — 0.0004 mg/L 2022–2024 Archived
Heptachlor epoxide MONITORING AND REPORTING — 0.0002 mg/L 2022–2024 Archived
HEXACHLOROBENZENE MONITORING AND REPORTING — 0.001 mg/L 2022–2024 Archived
Benzo(a)pyrene MONITORING AND REPORTING — 0.0002 mg/L 2022–2024 Archived
Pentachlorophenol MONITORING AND REPORTING — 0.001 mg/L 2022–2024 Archived
Chlordane MONITORING AND REPORTING — 0.002 mg/L 2022–2024 Archived
E. COLI MONITORING AND REPORTING — 0 2021 Resolved
E. COLI MONITORING AND REPORTING — 0 2021 Resolved
Public Notice OTHER — — 2019 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2019 Resolved
E. COLI MONITORING AND REPORTING — 0 2018 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 28 recorded since 2015 (1 health-based).

About the Main Water System

Utility City Of Cotulla
PWSID TX1420001
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 3,711
Service connections 1,741
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Cotulla tap water safe to drink? ▼
No federal limit is exceeded on record. 1 violation(s) remain open.
Does Cotulla water have PFAS? ▼
It was tested for the six regulated PFAS compounds and none were detected.
Who supplies water to Cotulla? ▼
City Of Cotulla (PWSID TX1420001). Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2024-07-18. No significant deficiencies were recorded.

What Should Cotulla 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.

Nearby Cities in Texas

Encinal, Tx Tap Water Quality 2026 La Salle Fowlerton, Tx Tap Water Quality 2026 La Salle