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Water system · PWSID CA3610001

ADELANTO, CITY OF

ADELANTO, CA · ~39,930 people served

Check your exact address → ADELANTO overview
89
Excellent
PurityRadar safety score

PWSID

CA3610001

State

California

City

ADELANTO

Population served

39,930

Primary source

Groundwater

Score history

▼ 11 points — the score moved from 100 to 89 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 89

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).

PFOS

Perfluorooctanesulfonic acid

4.5 ppt

limit 4 ppt

Above EPA limit · 1.1×

PFHxS

Perfluorohexanesulfonic acid

4.6 ppt

limit 10 ppt

Below EPA limit

Lithium

11,100 ppt

limit —

No federal limit

Violations & enforcement

16

Violations on record

0

Unaddressed

9

Health-based

24

Enforcement actions

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

Monitoring & reporting · Nitrate began Jan 2018 Resolved
Monitoring & reporting · Nitrate began Jan 2015 Resolved
Monitoring & reporting · EPA contaminant 3014 began Jun 2014 Resolved
Monitoring & reporting · Nitrate began Jan 2014 Resolved
Monitoring & reporting · Nitrate began Jan 2013 Resolved
Monitoring & reporting · Total coliform began Sep 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
Max contaminant level (MCL) · Arsenic health-based began Jan 2010 Resolved

Recent enforcement actions

  • State action · SFL Feb 2019
  • State action · SOX Jan 2019
  • State action · SIE Jan 2019
  • State action · SIA Jan 2019
  • State action · SIA Jan 2019
  • State action · SIE Jan 2019
  • State action · SOX Apr 2018
  • State action · SFJ May 2016

This profile is built from EPA public records for system CA3610001 — 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.