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Water system · PWSID CA3301040

RIVERDALE ESTATES

IRVINE, CA · ~300 people served

Check your exact address → IRVINE overview
100
Excellent
PurityRadar safety score

PWSID

CA3301040

State

California

City

IRVINE

Population served

300

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

12

Violations on record

0

Unaddressed

1

Health-based

29

Enforcement actions

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

Other · EPA contaminant 7000 began Jul 2019 Resolved
Monitoring & reporting · Beryllium began Jan 2014 Resolved
Monitoring & reporting · Nitrate began Jan 2012 Resolved
Monitoring & reporting · EPA contaminant 4030 began Jan 2009 Resolved
Other · EPA contaminant 7000 began Jul 2007 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 2005 Resolved
Monitoring & reporting · Total coliform began Jul 2005 Resolved
Other · EPA contaminant 7000 began Jul 2005 Resolved
Other · EPA contaminant 7000 began Jul 2004 Resolved
Monitoring & reporting · Total coliform began Nov 2003 Resolved
Monitoring & reporting · Total coliform began Aug 1999 Resolved
Monitoring & reporting · Lead & Copper Rule began Jul 1993 Resolved

Recent enforcement actions

  • State action · SFJ Oct 2019
  • State action · SOX Oct 2019
  • State action · SOX Jan 2019
  • State action · SOX Feb 2018
  • State action · SFJ Jan 2018
  • State action · SOX Jan 2017
  • State action · SFJ Jan 2017
  • State action · SOX Feb 2016

This profile is built from EPA public records for system CA3301040 — 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.