WILLOW CREEK C.S.D.

WILLOW CREEK, CA · ~1,298 people served

Check your exact address → WILLOW CREEK overview

Excellent

PurityRadar safety score

PWSID

CA1210015

State

California

City

WILLOW CREEK

Population served

1,298

Primary source

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 85 Jun 18, 2026 · score 85

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 2019. Official EPA record →

Reporting · EPA contaminant 5200 began Jul 2025 Unaddressed

Reporting · EPA contaminant 5200 began Oct 2024 Unaddressed

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

Treatment technique · Lead & Copper Rule health-based began Jun 2019 Resolved

Treatment technique · EPA contaminant 0200 health-based began Jun 1993 Resolved

Recent enforcement actions

State action · SOX Jul 2019
State action · SFL Jun 2019
State action · SOX Mar 2018
State action · SFK Dec 1994

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Nitrate

1 station · latest Nov 2020

0.076 · max 0.076 mg/l as N · 2

Arsenic

1 station · latest Nov 2020

0.41 · max 0.41 ug/l · 1

Copper

1 station · latest Nov 2020

2.8 · max 2.8 ug/l · 1

Fluoride

1 station · latest Nov 2020

0.04 · max 0.04 mg/l · 1

Lead

1 station · latest Nov 2020

0.159 · max 0.159 ug/l · 1

Manganese

1 station · latest Nov 2020

4.97 · max 4.97 ug/l · 1

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system CA1210015 — 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.