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Water system · PWSID CA5010008

HUGHSON, CITY OF

HUGHSON, CA · ~7,481 people served

Check your exact address → HUGHSON overview
85
Excellent
PurityRadar safety score

PWSID

CA5010008

State

California

City

HUGHSON

Population served

7,481

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

9

Violations on record

2

Unaddressed

6

Health-based

16

Enforcement actions

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

Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Unaddressed
Reporting · EPA contaminant 5200 began Oct 2024 Unaddressed
Monitoring & reporting · Nitrate began Jul 2011 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2010 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 2003 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 2003 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jun 2003 Resolved
Max contaminant level (MCL) · Total coliform health-based began Mar 2002 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 1998 Resolved

Recent enforcement actions

  • State action · SFL Jun 2018
  • State action · SFL Nov 2011
  • State action · SOX Nov 2011
  • State action · SOX Jan 2011
  • State action · SFL Jan 2011
  • State action · SOX Jul 2009
  • State action · SFL Sep 2003
  • State action · SOX Sep 2003

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 Apr 2021

1.98 · max 1.98 mg/l as N · 2

Arsenic

1 station · latest Apr 2021

17.5 · max 17.5 ug/l · 1

Copper

1 station · latest Apr 2021

0.63 · max 0.63 ug/l · 1

Fluoride

1 station · latest Apr 2021

0.21 · max 0.21 mg/l · 1

Lead

1 station · latest Apr 2021

0.175 · max 0.175 ug/l · 1

Uranium

1 station · latest Apr 2021

0.765 · max 0.765 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 CA5010008 — 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.