CALCASIEU PARISH WW DISTRICT NO 4

WESTLAKE, LA · ~5,340 people served

Check your exact address → WESTLAKE overview

100

Excellent

PurityRadar safety score

PWSID

LA1019053

State

Louisiana

City

WESTLAKE

Population served

5,340

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

Lithium

14,000 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

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

Other · EPA contaminant 7500 began Dec 2025 Unaddressed

Treatment technique · EPA contaminant 0700 health-based began Oct 2025 Unaddressed

Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Unaddressed

Reporting · EPA contaminant 5200 began Oct 2024 Unaddressed

Other · EPA contaminant 7500 began Aug 2023 Resolved

Treatment technique · EPA contaminant 0700 health-based began Jul 2023 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 2019 Resolved

Max contaminant level (MCL) · Total coliform health-based began May 2006 Resolved

Recent enforcement actions

State action · SIA Oct 2025
State action · SIE Oct 2025
State action · SIF Dec 2023
State action · SOX Dec 2023
State action · SOX Dec 2023
State action · SIA Nov 2023
State action · SIE Jul 2023
State action · SIA Jul 2023

This profile is built from EPA public records for system LA1019053 — 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.