COBLES CORNER

HUGHSON, CA · ~50 people served

Check your exact address → HUGHSON overview

100

Excellent

PurityRadar safety score

PWSID

CA5000033

State

California

City

HUGHSON

Population served

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

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2019. Official EPA record →

Monitoring & reporting · Arsenic began Jul 2015 Resolved

Monitoring & reporting · Arsenic began Apr 2015 Resolved

Max contaminant level (MCL) · Total coliform health-based began May 2000 Resolved

Max contaminant level (MCL) · EPA contaminant 2931 health-based began Jul 1998 Resolved

Max contaminant level (MCL) · Total coliform health-based began Feb 1997 Resolved

Monitoring & reporting · Lead & Copper Rule began Jul 1993 Resolved

Recent enforcement actions

State action · SOX Jan 2019
State action · SOX Dec 2015
State action · SFL Oct 2015
State action · SIE Sep 2007
State action · SIF Jul 2007
State action · SIF Jun 2007
State action · SIE Mar 2007
State action · SOX Jun 2000

This profile is built from EPA public records for system CA5000033 — 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.