WALLA WALLA WATER DIVISION

Walla Walla, WA · ~42,959 people served

Check your exact address → Walla Walla overview

100

Excellent

PurityRadar safety score

PWSID

WA5392500

State

Washington

City

Walla Walla

Population served

42,959

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

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 Jul 2025. Official EPA record →

Monitoring & reporting · Nitrate began Jan 2023 Resolved

Monitoring & reporting · EPA contaminant 2110 began Oct 2022 Resolved

Monitoring & reporting · EPA contaminant 2031 began Oct 2022 Resolved

Monitoring & reporting · EPA contaminant 2040 began Oct 2022 Resolved

Monitoring & reporting · EPA contaminant 2041 began Oct 2022 Resolved

Monitoring & reporting · EPA contaminant 2326 began Oct 2022 Resolved

Monitoring & reporting · EPA contaminant 2326 began Jul 2022 Resolved

Monitoring & reporting · EPA contaminant 2110 began Jul 2022 Resolved

Monitoring & reporting · EPA contaminant 2040 began Jul 2022 Resolved

Monitoring & reporting · EPA contaminant 2031 began Jul 2022 Resolved

Monitoring & reporting · EPA contaminant 2041 began Jul 2022 Resolved

Monitoring & reporting · EPA contaminant 2031 began Apr 2021 Resolved

Recent enforcement actions

State action · SOX Jul 2025
State action · SOX Nov 2024
State action · SOX Feb 2022
State action · SOX Aug 2021
State action · SOX May 2021
State action · SOX May 2021
State action · SOX May 2020
State action · SOX May 2020

This profile is built from EPA public records for system WA5392500 — 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.