LOWER ROCK CREEK MUTUAL WATER CO.

BISHOP, CA · ~310 people served

Check your exact address → BISHOP overview

Excellent

PurityRadar safety score

PWSID

CA2600538

State

California

City

BISHOP

Population served

310

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

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Sep 2015. Official EPA record →

Reporting · EPA contaminant 5200 began Oct 2024 Unaddressed

Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Unaddressed

Max contaminant level (MCL) · Total coliform health-based began Aug 2015 Resolved

Monitoring & reporting · Total coliform began Jul 2010 Resolved

Monitoring & reporting · Total coliform began Nov 2009 Resolved

Monitoring & reporting · Total coliform began Jun 2005 Resolved

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

Recent enforcement actions

State action · SOX Sep 2015
State action · SFJ Sep 2015
State action · SFJ Feb 2015
State action · SOX Aug 2010
State action · SIE Jul 2010
State action · SOX Dec 2009
State action · SIE Nov 2009
EPA/federal action · EOX Sep 2005

This profile is built from EPA public records for system CA2600538 — 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.