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Water system · PWSID CA3301535

RANCHO CARRILLO MWC

RANCHO MISSION VIEJO, CA · ~210 people served

Check your exact address → RANCHO MISSION VIEJO overview
100
Excellent
PurityRadar safety score

PWSID

CA3301535

State

California

City

RANCHO MISSION VIEJO

Population served

210

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

22

Violations on record

0

Unaddressed

5

Health-based

49

Enforcement actions

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

Monitoring & reporting · Nitrate began Jul 2018 Resolved
Max contaminant level (MCL) · Nitrate health-based began Jul 2017 Resolved
Max contaminant level (MCL) · Nitrate health-based began Apr 2017 Resolved
Max contaminant level (MCL) · Nitrate health-based began Jan 2017 Resolved
Monitoring & reporting · Nitrate began Jan 2016 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 2014 Resolved
Max contaminant level (MCL) · Total coliform health-based began Oct 2013 Resolved
Other · EPA contaminant 7000 began Jul 2013 Resolved
Monitoring & reporting · Nitrate began Dec 2012 Resolved
Other · EPA contaminant 7000 began Jul 2007 Resolved
Other · EPA contaminant 7000 began Jul 2005 Resolved
Monitoring & reporting · Total coliform began Oct 2004 Resolved

Recent enforcement actions

  • State action · SOX Dec 2019
  • State action · SOX Jan 2019
  • State action · SOX Jan 2019
  • State action · SOX Jan 2019
  • State action · SOX Dec 2018
  • State action · SOX Nov 2018
  • State action · SFL May 2017
  • State action · SOX May 2017

This profile is built from EPA public records for system CA3301535 — 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.