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Water system · PWSID LA1039005

TOWN OF MAMOU WATER SYSTEM

MAMOU, LA · ~4,559 people served

Check your exact address → MAMOU overview
100
Excellent
PurityRadar safety score

PWSID

LA1039005

State

Louisiana

City

MAMOU

Population served

4,559

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 Mar 2024). Levels in parts per trillion (ppt).

Lithium

16,000 ppt

limit —

No federal limit

Violations & enforcement

36

Violations on record

0

Unaddressed

25

Health-based

100

Enforcement actions

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

Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Jan 2023 Resolved
Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Oct 2022 Resolved
Other · EPA contaminant 7500 began Jul 2022 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2022 Resolved
Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Jul 2022 Resolved
Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Apr 2022 Resolved
Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Jan 2022 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2022 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2021 Resolved
Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Oct 2021 Resolved
Other · EPA contaminant 7500 began Jul 2021 Resolved
Other · EPA contaminant 7000 began Jul 2021 Resolved

Recent enforcement actions

  • State action · SIF Jan 2025
  • State action · SID Dec 2024
  • State action · SOX Feb 2024
  • State action · SOX Jun 2023
  • State action · SIF Mar 2023
  • State action · SIF Feb 2023
  • State action · SIF Feb 2023
  • State action · SIE Feb 2023

This profile is built from EPA public records for system LA1039005 — 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.