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Water system · PWSID CA5410003

EXETER, CITY OF

EXETER, CA · ~11,169 people served

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

PWSID

CA5410003

State

California

City

EXETER

Population served

11,169

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

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

17

Violations on record

0

Unaddressed

7

Health-based

26

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jun 2025. Official EPA record →

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2024 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2024 Resolved
Max contaminant level (MCL) · Nitrate health-based began Apr 2022 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Apr 2018 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Apr 2018 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2018 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2018 Resolved
Monitoring · Lead & Copper Rule began Dec 2017 Resolved
Monitoring · Lead & Copper Rule began Nov 2017 Resolved
Other · EPA contaminant 7000 began Oct 2011 Resolved
Max contaminant level (MCL) · EPA contaminant 2931 health-based began Aug 2003 Resolved
Monitoring & reporting · Nitrate began Jan 2000 Resolved

Recent enforcement actions

  • State action · SOX Jun 2025
  • State action · SFL Nov 2024
  • State action · SOX Sep 2022
  • State action · SFL Jun 2022
  • State action · SOX Nov 2018
  • State action · SFL Aug 2018
  • State action · SOX May 2018
  • State action · SOX May 2018

This profile is built from EPA public records for system CA5410003 — 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.