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Gueydan, LA Tap Water Quality 2026

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

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

Main Utility: Town Of Gueydan Water System PWSID: LA1113006 Updated: 2026 Q2
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3 violations currently open

Lead is 3.00 ppb, 20% of the action level. PFAS has never been sampled at this system.

F

Gueydan earns an F for water quality

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

Lead: 3.00 ppb — 20% of the federal action level
PFAS never sampled at this system
21 violations since 2015, 8 health-based
3 violations currently open
Gueydan's lead level vs. all Louisiana community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 3.00 ppb — 20% of the federal action level
✓ Lower lead than 20% of Louisiana utilities
Population Served
1162
~672 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
3
3 open of 21 since 2015

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
20% of EPA action level
3.00 ppb
Action level: 15 ppb
Copper (Cu)
90th percentile of tap samples. SDWIS reports a copper figure only when a system exceeds the action level, so any value here is an exceedance.
115.4% of EPA action level
1,500 ppb
Action level: 1,300 ppb
The 90th-percentile lead result is 3.00 ppb, 20% 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. Copper reached the action level here; a copper figure appears in SDWIS only when a system triggers it.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Lead and Copper Rule MONITORING AND REPORTING — TT 2026 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2026 Archived
Public Notice OTHER — — 2025 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2025 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2025 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2025 Unaddressed
LEAD AND COPPER RULE REVISIONS TREATMENT TECHNIQUE — — 2024 Resolved
Public Notice OTHER — — 2023 Resolved
Public Notice OTHER — — 2023 Resolved
Lead and Copper Rule TREATMENT TECHNIQUE — TT 2023 Resolved
Public Notice OTHER — — 2023 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2023 Resolved
Public Notice OTHER — — 2022 Resolved
Public Notice OTHER — — 2022 Resolved
Lead and Copper Rule TREATMENT TECHNIQUE — TT 2022 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2022 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2022 Resolved
Public Notice OTHER — — 2021 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2021 Addressed
Lead and Copper Rule MONITORING AND REPORTING — TT 2021 Resolved
Consumer Confidence Rule OTHER — — 2017 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

3 violations remain open, out of 21 recorded since 2015 (8 health-based).

About the Main Water System

Utility Town Of Gueydan Water System
PWSID LA1113006
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 1,162
Service connections 672
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Gueydan tap water safe to drink? ▼
No federal limit is exceeded on record. 3 violation(s) remain open. Lead is 3.00 ppb, 20% of the action level.
Does Gueydan water have PFAS? ▼
This system has never been sampled for PFAS. EPA's national monitoring covered systems serving 3,300 people or more, so no results exist — which is not evidence that none is present.
Who supplies water to Gueydan? ▼
Town Of Gueydan Water System (PWSID LA1113006). Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2025-04-29. Inspectors recorded 2 significant deficiencies.

What Should Gueydan 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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