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St. Martinville, LA Tap Water Quality 2026

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

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

Main Utility: City Of St Martinville Water System PWSID: LA1099007 Updated: 2026 Q2
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3 violations currently open

Lead is 2.00 ppb, 13% of the action level. No PFAS was detected.

D

St. Martinville earns a D for water quality

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

Lead: 2.00 ppb — 13% of the federal action level
PFAS tested, none detected
12 violations since 2015, 12 health-based
3 violations currently open
St. Martinville's lead level vs. all Louisiana community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 2.00 ppb — 13% of the federal action level
✓ Lower lead than 56% of Louisiana utilities
Population Served
5249
~2421 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
3
3 open of 12 since 2015

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
13% of EPA action level
2.00 ppb
Action level: 15 ppb
The 90th-percentile lead result is 2.00 ppb, 13% 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
Groundwater Rule TREATMENT TECHNIQUE — — 2025 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2025 Resolved
LEAD AND COPPER RULE REVISIONS TREATMENT TECHNIQUE — — 2024 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2023 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2023 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2023 Unaddressed
TTHM MCL EXCEEDANCE 0.082 MG/L 0.080 mg/L 2021 Resolved
TTHM MCL EXCEEDANCE 86 UG/L 0.080 mg/L 2016 Resolved
TTHM MCL EXCEEDANCE 89 UG/L 0.080 mg/L 2015 Resolved
TTHM MCL EXCEEDANCE 88 UG/L 0.080 mg/L 2015 Resolved
TTHM MCL EXCEEDANCE 84 UG/L 0.080 mg/L 2015 Resolved
TTHM MCL EXCEEDANCE 81 UG/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

3 violations remain open, out of 12 recorded since 2015 (12 health-based).

About the Main Water System

Utility City Of St Martinville Water System
PWSID LA1099007
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 5,249
Service connections 2,421
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is St. Martinville tap water safe to drink? ▼
No federal limit is exceeded on record. 3 violation(s) remain open. Lead is 2.00 ppb, 13% of the action level.
Does St. Martinville water have PFAS? ▼
It was tested for the six regulated PFAS compounds and none were detected.
Who supplies water to St. Martinville? ▼
City Of St Martinville Water System (PWSID LA1099007). Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2024-07-23. Inspectors recorded 1 significant deficiency.

What Should St. Martinville 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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