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Water system · PWSID LA1095003

ST JOHN WATER DISTRICT 1

LAPLACE, LA · ~10,484 people served

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

PWSID

LA1095003

State

Louisiana

City

LAPLACE

Population served

10,484

Primary source

Surface water

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 Sep 2025). Levels in parts per trillion (ppt).

Lithium

10,300 ppt

limit —

No federal limit

PFBA

6 ppt

limit —

No federal limit

Violations & enforcement

58

Violations on record

0

Unaddressed

46

Health-based

184

Enforcement actions

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

Monitoring & reporting · Lead & Copper Rule began Sep 2024 Resolved
Treatment technique · EPA contaminant 0300 health-based began Jun 2019 Resolved
Other · EPA contaminant 7000 began Jul 2017 Resolved
Treatment technique · EPA contaminant 0300 health-based began Nov 2015 Resolved
Treatment technique · EPA contaminant 0800 health-based began Oct 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
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2014 Resolved
Treatment technique · Bromate health-based began Apr 2014 Resolved
Treatment technique · Bromate health-based began Jan 2014 Resolved
Treatment technique · Bromate health-based began Oct 2013 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jun 2013 Resolved

Recent enforcement actions

  • State action · SOX Feb 2025
  • State action · SOX Jun 2019
  • State action · SIA Jun 2019
  • State action · SIF Jun 2019
  • State action · SIE Jun 2019
  • State action · SIA Dec 2017
  • State action · SOX Jul 2017
  • State action · SOX Aug 2016

This profile is built from EPA public records for system LA1095003 — 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.