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Water system · PWSID CA1010028

RIVERDALE PUBLIC UTILITY DISTRICT

RIVERDALE, CA · ~2,756 people served

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

PWSID

CA1010028

State

California

City

RIVERDALE

Population served

2,756

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

44

Violations on record

0

Unaddressed

34

Health-based

23

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Mar 2018. Official EPA record →

Monitoring & reporting · Nitrate began Jan 2016 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2014 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2014 Resolved
Max contaminant level (MCL) · Arsenic health-based began Oct 2013 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2013 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 2013 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jul 2013 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2013 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2013 Resolved
Max contaminant level (MCL) · Arsenic health-based began Oct 2012 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jul 2012 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2012 Resolved

Recent enforcement actions

  • State action · SOX Mar 2018
  • State action · SOX Oct 2017
  • State action · SFL Mar 2017
  • EPA/federal action · EOX May 2016
  • State action · SOX Mar 2015
  • State action · SFL Feb 2015
  • State action · SOX Dec 2014
  • State action · SFL Jan 2014

This profile is built from EPA public records for system CA1010028 — 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.