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Water system · PWSID CA1010021

MENDOTA, CITY OF

MENDOTA, CA · ~11,404 people served

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

PWSID

CA1010021

State

California

City

MENDOTA

Population served

11,404

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

13

Violations on record

0

Unaddressed

3

Health-based

19

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) · Total coliform health-based began Sep 2013 Resolved
Max contaminant level (MCL) · Total coliform health-based began May 2013 Resolved
Monitoring & reporting · Nitrate began Jan 2011 Resolved
Monitoring & reporting · Total coliform began Jan 2010 Resolved
Monitoring & reporting · Nitrate began Jan 2006 Resolved
Monitoring & reporting · Total coliform began Mar 2005 Resolved
Monitoring & reporting · Total coliform began Nov 2004 Resolved
Monitoring & reporting · Total coliform began Oct 2004 Resolved
Monitoring & reporting · Total coliform began Sep 2004 Resolved
Monitoring & reporting · Lead & Copper Rule began Jan 2004 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jan 2001 Resolved

Recent enforcement actions

  • State action · SOX Mar 2018
  • State action · SFL Mar 2017
  • State action · SFL Dec 2013
  • State action · SFL Aug 2013
  • State action · SIA Mar 2012
  • State action · SIA Mar 2010
  • State action · SOX Feb 2009
  • State action · SIA May 2007

This profile is built from EPA public records for system CA1010021 — 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.