CALIPATRIA STATE PRISON

IMPERIAL, CA · ~4,800 people served

Check your exact address → IMPERIAL overview

100

Excellent

PurityRadar safety score

PWSID

CA1310800

State

California

City

IMPERIAL

Population served

4,800

Primary source

SWP

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 Sep 2025). Levels in parts per trillion (ppt).

Lithium

59,300 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Dec 2016. Official EPA record →

Treatment technique · EPA contaminant 0200 health-based began Feb 2012 Resolved

Max contaminant level (MCL) · Total coliform health-based began Jul 2009 Resolved

Max contaminant level (MCL) · Total coliform health-based began Dec 2003 Resolved

Max contaminant level (MCL) · Total coliform health-based began Feb 1998 Resolved

Recent enforcement actions

State action · SOX Dec 2016
State action · SIA Apr 2012
State action · SFG Feb 2010
State action · SOX Jul 2009
State action · SIA Apr 2006
State action · SFL Feb 2004
State action · SOX Jan 2004
State action · SOX Sep 1998

This profile is built from EPA public records for system CA1310800 — 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.