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Water system · PWSID LA1099007

CITY OF ST MARTINVILLE WATER SYSTEM

ST. MARTINVILLE, LA · ~7,575 people served

Check your exact address → ST. MARTINVILLE overview
100
Excellent
PurityRadar safety score

PWSID

LA1099007

State

Louisiana

City

ST. MARTINVILLE

Population served

7,575

Primary source

Groundwater

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 100

2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.

PFAS & contaminant readings

Latest detections from EPA’s UCMR5 monitoring (through Aug 2025). Levels in parts per trillion (ppt).

Lithium

31,500 ppt

limit —

No federal limit

Violations & enforcement

21

Violations on record

5

Unaddressed

13

Health-based

51

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Dec 2025. Official EPA record →

Treatment technique · EPA contaminant 0700 health-based began Nov 2025 Unaddressed
Treatment technique · EPA contaminant 0700 health-based began Nov 2025 Unaddressed
Treatment technique · EPA contaminant 0700 health-based began Nov 2023 Unaddressed
Treatment technique · EPA contaminant 0700 health-based began Nov 2023 Unaddressed
Treatment technique · EPA contaminant 0700 health-based began Feb 2023 Unaddressed
Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2021 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2016 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2015 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2015 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2015 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2015 Resolved

Recent enforcement actions

  • State action · SIA Dec 2025
  • State action · SIE Dec 2025
  • State action · SOX Dec 2024
  • State action · SIF Apr 2024
  • State action · SIA Nov 2023
  • State action · SIE Nov 2023
  • State action · SIF Apr 2023
  • State action · SIA Mar 2023

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Nitrate

1 station · latest Jul 2023

0.38 · max 0.38 mg/L · 1

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system LA1099007 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.