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Diboll, TX Tap Water Quality 2026

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

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

Main Utility: City Of Diboll PWSID: TX0030001 Updated: 2026 Q2
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1 violation currently open

Lead was not detected. No PFAS was detected.

D

Diboll earns a D for water quality

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

Lead: not detected
PFAS tested, none detected
15 violations since 2015, 6 health-based
1 violation currently open
Diboll'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
4403
~1988 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
1
1 open of 15 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
TTHM MCL EXCEEDANCE 0.099 MG/L 0.080 mg/L 2026 Unaddressed
TTHM MCL EXCEEDANCE 0.093 MG/L 0.080 mg/L 2026 Archived
TTHM MCL EXCEEDANCE 0.088 MG/L 0.080 mg/L 2025 Archived
Revised Total Coliform Rule MONITORING FAILURE — — 2025 Resolved
Consumer Confidence Rule OTHER — — 2025 Resolved
Public Notice OTHER — — 2025 Resolved
LEAD AND COPPER RULE REVISIONS TREATMENT TECHNIQUE — — 2024 Resolved
LEAD AND COPPER RULE REVISIONS REPORTING FAILURE — — 2024 Resolved
Consumer Confidence Rule OTHER — — 2024 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2023 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2022 Resolved
Public Notice OTHER — — 2021 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2020 Resolved
TTHM MCL EXCEEDANCE 0.083 MG/L 0.080 mg/L 2015 Resolved
TTHM MCL EXCEEDANCE 0.145 MG/L 0.080 mg/L 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 15 recorded since 2015 (6 health-based).

About the Main Water System

Utility City Of Diboll
PWSID TX0030001
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 4,403
Service connections 1,988
Systems serving this area 2
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Diboll tap water safe to drink? ▼
No federal limit is exceeded on record. 1 violation(s) remain open.
Does Diboll water have PFAS? ▼
It was tested for the six regulated PFAS compounds and none were detected.
Who supplies water to Diboll? ▼
City Of Diboll (PWSID TX0030001), 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 2025-12-19. No significant deficiencies were recorded.

What Should Diboll 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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