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Karnes City, TX Tap Water Quality 2026

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

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

Main Utility: City Of Karnes City PWSID: TX1280001 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 2.20 ppb, 15% of the action level and no violations are open. No PFAS was detected.

A

Karnes City earns an A for water quality

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

Lead: 2.20 ppb — 15% of the federal action level
PFAS tested, none detected
11 violations since 2015, 2 health-based
No violations currently open
Karnes City's lead level vs. all Texas community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 2.20 ppb — 15% of the federal action level
✓ Lower lead than 32% of Texas utilities
Population Served
2022
~1423 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
11 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
15% of EPA action level
2.20 ppb
Action level: 15 ppb
The 90th-percentile lead result is 2.20 ppb, 15% 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 — — 2025 Resolved
Consumer Confidence Rule OTHER — — 2025 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2025 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2025 Resolved
TTHM MCL EXCEEDANCE 0.085 MG/L 0.080 mg/L 2025 Archived
LEAD AND COPPER RULE REVISIONS TREATMENT TECHNIQUE — — 2024 Resolved
LEAD AND COPPER RULE REVISIONS REPORTING FAILURE — — 2024 Resolved
Public Notice OTHER — — 2022 Unaddressed
E. COLI MONITORING AND REPORTING — 0 2021 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2017 Unaddressed
Lead and Copper Rule MONITORING AND REPORTING — TT 2016 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

11 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 Karnes City
PWSID TX1280001
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 2,022
Service connections 1,423
Systems serving this area 2
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Karnes City tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 2.20 ppb, 15% of the action level.
Does Karnes City water have PFAS? ▼
It was tested for the six regulated PFAS compounds and none were detected.
Who supplies water to Karnes City? ▼
City Of Karnes City (PWSID TX1280001), one of 2 systems serving this area. Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2026-04-29. No significant deficiencies were recorded.

What Should Karnes City 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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