JOHN LATORACCA CORRECTIONAL FACILITY

MERCED, CA · ~800 people served

Check your exact address → MERCED overview

100

Excellent

PurityRadar safety score

PWSID

CA2400172

State

California

City

MERCED

Population served

800

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 Feb 2023. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Oct 2022 Addressed

Monitoring & reporting · Lead & Copper Rule began Oct 2018 Addressed

Monitoring & reporting · Total coliform began Feb 2012 Resolved

Monitoring & reporting · Total coliform began Jan 2012 Resolved

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

Max contaminant level (MCL) · Total coliform health-based began Aug 1996 Resolved

Recent enforcement actions

State action · SFL Feb 2023
State action · SOX Oct 2019
State action · SFL Feb 2019
State action · SFJ Aug 2012
State action · SFJ Aug 2012
State action · SOX Mar 2012
State action · SOX Feb 2012
State action · SOX Aug 1997

This profile is built from EPA public records for system CA2400172 — 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.