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Water system · PWSID CA1300009

WINTERHAVEN COUNTY WATER DISTRICT

WINTERHAVEN, CA · ~394 people served

Check your exact address → WINTERHAVEN overview

Excellent

PurityRadar safety score

PWSID

CA1300009

State

California

City

WINTERHAVEN

Population served

394

Primary source

Groundwater

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 Jan 2025. Official EPA record →

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

Reporting · EPA contaminant 5200 began Oct 2024 Unaddressed

Monitoring & reporting · EPA contaminant 2063 began Jan 2022 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2022 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2022 Resolved

Monitoring & reporting · Nitrate began Jan 2022 Resolved

Monitoring · Lead & Copper Rule began Sep 2019 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2017 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2017 Resolved

Monitoring · Lead & Copper Rule began Apr 2016 Resolved

Monitoring & reporting · EPA contaminant 1094 began Jan 2016 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2016 Resolved

Recent enforcement actions

State action · SFJ Jan 2025
State action · SOX Jan 2025
State action · SOX May 2023
State action · SOX Nov 2022
State action · SFJ Nov 2022
State action · SFJ Nov 2022
State action · SOX Jul 2022
State action · SOX Sep 2020

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

Arsenic

1 station · latest Oct 2022

0.19 · max 0.19 ug/l · 1

Fluoride

1 station · latest Oct 2022

0.24 · max 0.24 mg/l · 1

Manganese

1 station · latest Oct 2022

1,360 · max 1,360 ug/l · 1

Uranium

1 station · latest Oct 2022

1.33 · max 1.33 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 CA1300009 — 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.