SMWD - SJ GROUND WATER PLANT

RANCHO SANTA MARGARITA, CA

Check your exact address → RANCHO SANTA MARGARITA overview

100

Excellent

PurityRadar safety score

PWSID

CA3010120

State

California

City

RANCHO SANTA MARGARITA

Population served

—

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 Nov 2018. Official EPA record →

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2018 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2018 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Oct 2008 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Oct 2008 Resolved

Monitoring & reporting · EPA contaminant 2050 began Dec 2006 Resolved

Monitoring & reporting · Nitrite began Dec 2006 Resolved

Monitoring & reporting · Beryllium began Dec 2006 Resolved

Recent enforcement actions

State action · SFJ Nov 2018
State action · SOX Apr 2018
State action · SOX Oct 2011
State action · SIA Oct 2011
State action · SIA Mar 2011
State action · SIA Feb 2011
State action · SOX Nov 2010
State action · SOX Nov 2010

This profile is built from EPA public records for system CA3010120 — 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.