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Doyline, LA Tap Water Quality 2026

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

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

Main Utility: Doyline Waterworks District 1 PWSID: LA1119008 Updated: 2026 Q2
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5 violations currently open

Lead is 2.30 ppb, 15% of the action level. PFAS was sampled but not enough times for a compliance determination.

D

Doyline earns a D for water quality

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

Lead: 2.30 ppb — 15% of the federal action level
PFAS sampled, too few results to judge
26 violations since 2015, 6 health-based
5 violations currently open
Doyline's lead level vs. all Louisiana community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 2.30 ppb — 15% of the federal action level
✓ Lower lead than 30% of Louisiana utilities
Population Served
293
~323 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
5
5 open of 26 since 2015

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
15% of EPA action level
2.30 ppb
Action level: 15 ppb
The 90th-percentile lead result is 2.30 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
Consumer Confidence Rule OTHER — — 2025 Resolved
Public Notice OTHER — — 2025 Unaddressed
LEAD AND COPPER RULE REVISIONS REPORTING FAILURE — — 2024 Resolved
LEAD AND COPPER RULE REVISIONS TREATMENT TECHNIQUE — — 2024 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2024 Resolved
Public Notice OTHER — — 2024 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2023 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2023 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2023 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2023 Unaddressed
Public Notice OTHER — — 2023 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2022 Unaddressed
Public Notice OTHER — — 2020 Unaddressed
Lead and Copper Rule MONITORING AND REPORTING — TT 2019 Resolved
Public Notice OTHER — — 2019 Unaddressed
Lead and Copper Rule MONITORING AND REPORTING — TT 2018 Resolved
Public Notice OTHER — — 2018 Unaddressed
Consumer Confidence Rule OTHER — — 2017 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2017 Resolved
Consumer Confidence Rule OTHER — — 2016 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2016 Resolved
Consumer Confidence Rule OTHER — — 2016 Resolved
Consumer Confidence Rule OTHER — — 2015 Resolved
Consumer Confidence Rule OTHER — — 2015 Resolved
Public Notice OTHER — — 2015 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

5 violations remain open, out of 26 recorded since 2015 (6 health-based).

About the Main Water System

Utility Doyline Waterworks District 1
PWSID LA1119008
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 293
Service connections 323
Systems serving this area 2
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Doyline tap water safe to drink? ▼
No federal limit is exceeded on record. 5 violation(s) remain open. Lead is 2.30 ppb, 15% of the action level.
Does Doyline water have PFAS? ▼
It was sampled, but no sampling point had enough results for a compliance determination.
Who supplies water to Doyline? ▼
Doyline Waterworks District 1 (PWSID LA1119008), 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 2025-08-08. Inspectors recorded 1 significant deficiency.

What Should Doyline 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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