Clark Addition Water System

Pasco, WA · ~189 people served

Check your exact address → Pasco overview

100

Excellent

PurityRadar safety score

PWSID

WA53AB809

State

Washington

City

Pasco

Population served

189

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

No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

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

Other · EPA contaminant 7000 began Jul 2025 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 2021 Resolved

Monitoring · Lead & Copper Rule began Jun 2019 Resolved

Monitoring · Lead & Copper Rule began Jul 2017 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 2010 Resolved

Monitoring & reporting · Nitrate began Jan 2009 Resolved

Recent enforcement actions

State action · SOX Sep 2025
State action · SOX Jul 2024
State action · SOX Jul 2019
State action · SOX Aug 2017
State action · SOX Jun 2011
State action · SOX May 2010

This profile is built from EPA public records for system WA53AB809 — 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.