RANCHO ROBLES MUTUAL WATER COMPANY

SAN MARTIN, CA · ~103 people served

Check your exact address → SAN MARTIN overview

100

Excellent

PurityRadar safety score

PWSID

CA4300577

State

California

City

SAN MARTIN

Population served

103

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 Aug 2000. Official EPA record →

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

Monitoring & reporting · Total coliform began Mar 1998 Resolved

Monitoring & reporting · Total coliform began Apr 1997 Resolved

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

Recent enforcement actions

State action · SOX Aug 2000
State action · SIE Aug 2000
State action · SOX Apr 1998
State action · SIA Apr 1998
State action · SOX May 1997
State action · SIA May 1997
State action · SOX Apr 1997
State action · SIA Apr 1997

This profile is built from EPA public records for system CA4300577 — 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.