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Water system · PWSID CA1610003

HANFORD, CITY OF

HANFORD, CA · ~62,127 people served

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

PWSID

CA1610003

State

California

City

HANFORD

Population served

62,127

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

115

Violations on record

0

Unaddressed

113

Health-based

51

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Aug 2024. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Oct 2023 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2021 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2021 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2020 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2020 Resolved
Max contaminant level (MCL) · Total coliform health-based began Oct 2014 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 2014 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 2014 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jul 2014 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jun 2014 Resolved
Monitoring & reporting · Nitrate began Jan 2014 Resolved
Max contaminant level (MCL) · Total coliform health-based began Dec 2012 Resolved

Recent enforcement actions

  • State action · SOX Aug 2024
  • State action · SFL Jun 2024
  • State action · SOX Nov 2022
  • State action · SFL Feb 2021
  • State action · SOX Mar 2018
  • State action · SIA Feb 2015
  • State action · SFL Nov 2014
  • State action · SOX Jul 2013

This profile is built from EPA public records for system CA1610003 — 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.