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Water system · PWSID CA1510005

DELANO, CITY OF

DELANO, CA · ~51,428 people served

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

PWSID

CA1510005

State

California

City

DELANO

Population served

51,428

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

Latest detections from EPA’s UCMR5 monitoring (through Sep 2024). Levels in parts per trillion (ppt).

Lithium

9,140 ppt

limit —

No federal limit

Violations & enforcement

34

Violations on record

0

Unaddressed

30

Health-based

18

Enforcement actions

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

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
Max contaminant level (MCL) · Arsenic health-based began Jan 2012 Resolved
Max contaminant level (MCL) · Arsenic health-based began Oct 2011 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jul 2011 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2011 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2011 Resolved
Max contaminant level (MCL) · Arsenic health-based began Oct 2010 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jul 2010 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2010 Resolved
Monitoring & reporting · Lead & Copper Rule began Jan 2010 Resolved

Recent enforcement actions

  • State action · SOX Mar 2018
  • State action · SOX Apr 2015
  • State action · SOX Jul 2011
  • State action · SIA May 2011
  • EPA/federal action · EFL Sep 2008
  • State action · SOX Aug 2007
  • State action · SIA Apr 2007
  • State action · SIA Jun 2005

This profile is built from EPA public records for system CA1510005 — 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.