WILLOW COUNTY WATER DISTRICT

UKIAH, CA · ~3,797 people served

Check your exact address → UKIAH overview

100

Excellent

PurityRadar safety score

PWSID

CA2310005

State

California

City

UKIAH

Population served

3,797

Primary source

SWP

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 Mar 2021. Official EPA record →

Monitoring & reporting · EPA contaminant 3014 began Jan 2021 Resolved

Recent enforcement actions

State action · SOX Mar 2021
State action · SOX Mar 2021
State action · SFL Mar 2021
EPA/federal action · EOX Mar 2000
EPA/federal action · EOX Dec 1993

This profile is built from EPA public records for system CA2310005 — 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.