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Water system · PWSID CA1910034

DOWNEY - CITY, WATER DEPT.

DOWNEY, CA · ~110,556 people served

Check your exact address → DOWNEY overview
34
Action needed
PurityRadar safety score

PWSID

CA1910034

State

California

City

DOWNEY

Population served

110,556

Primary source

Groundwater

Score history

▼ 66 points — the score moved from 100 to 34 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 34

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 Jul 2025). Levels in parts per trillion (ppt).

PFOS

Perfluorooctanesulfonic acid

14 ppt

limit 4 ppt

Above EPA limit · 3.5×

PFOA

Perfluorooctanoic acid

11 ppt

limit 4 ppt

Above EPA limit · 2.8×

PFHxS

Perfluorohexanesulfonic acid

3.7 ppt

limit 10 ppt

Below EPA limit

PFPeA

27 ppt

limit —

No federal limit

PFHxA

21 ppt

limit —

No federal limit

PFBS

8.9 ppt

limit —

No federal limit

PFBA

7.4 ppt

limit —

No federal limit

PFHpA

4.2 ppt

limit —

No federal limit

Violations & enforcement

5

Violations on record

0

Unaddressed

3

Health-based

16

Enforcement actions

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

Treatment technique · Lead & Copper Rule health-based began Feb 2018 Resolved
Monitoring & reporting · Total coliform began Sep 2013 Resolved
Monitoring & reporting · EPA contaminant 3014 began May 2012 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 2008 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 2003 Resolved

Recent enforcement actions

  • State action · SOX Sep 2018
  • State action · SFL Sep 2018
  • State action · SIA Oct 2013
  • State action · SIE Oct 2013
  • State action · SOX Sep 2013
  • State action · SOX Jul 2013
  • State action · SIA Feb 2013
  • State action · SIE Feb 2013

This profile is built from EPA public records for system CA1910034 — 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.