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Water system · PWSID CA3700936

RANCHO ESTATES MUTUAL WATER CO.

PAUMA VALLEY, CA · ~200 people served

Check your exact address → PAUMA VALLEY overview
100
Excellent
PurityRadar safety score

PWSID

CA3700936

State

California

City

PAUMA VALLEY

Population served

200

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

27

Violations on record

0

Unaddressed

10

Health-based

42

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2020. Official EPA record →

Max contaminant level (MCL) · Thallium health-based began Apr 2018 Resolved
Max contaminant level (MCL) · Thallium health-based began Jan 2018 Resolved
Max contaminant level (MCL) · Thallium health-based began Oct 2017 Resolved
Reporting · Lead & Copper Rule began Sep 2017 Resolved
Max contaminant level (MCL) · Thallium 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
Max contaminant level (MCL) · Nitrate health-based began Apr 2016 Resolved
Monitoring & reporting · Combined radium-226/228 began Jan 2016 Resolved
Monitoring & reporting · EPA contaminant 2990 began Jan 2016 Resolved
Monitoring & reporting · Nitrate began Jan 2016 Resolved
Max contaminant level (MCL) · Nitrate health-based began Jan 2016 Resolved

Recent enforcement actions

  • State action · SOX Jan 2020
  • State action · SOX Nov 2017
  • State action · SFJ Nov 2017
  • State action · SOX Apr 2017
  • State action · SFO Apr 2017
  • State action · SOX Aug 2016
  • State action · SOX May 2016
  • State action · SFL Mar 2016

This profile is built from EPA public records for system CA3700936 — 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.