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Water system · PWSID CA5710005

CITY OF WINTERS

WINTERS, CA · ~7,115 people served

Check your exact address → WINTERS overview
100
Excellent
PurityRadar safety score

PWSID

CA5710005

State

California

City

WINTERS

Population served

7,115

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

Latest detections from EPA’s UCMR5 monitoring (through Dec 2023). Levels in parts per trillion (ppt).

PFNA

Perfluorononanoic acid

4.2 ppt

limit 10 ppt

Below EPA limit

Lithium

9,700 ppt

limit —

No federal limit

Violations & enforcement

3

Violations on record

0

Unaddressed

1

Health-based

4

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Apr 2018. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Oct 2017 Resolved
Max contaminant level (MCL) · Total coliform health-based began May 2007 Resolved
Monitoring & reporting · Lead & Copper Rule began Jun 1993 Resolved

Recent enforcement actions

  • State action · SIA Apr 2018
  • State action · SOX Apr 2018
  • State action · SOX May 2007
  • EPA/federal action · EOX Mar 2000

This profile is built from EPA public records for system CA5710005 — 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.