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Water system · PWSID CA3010010

CITY OF FULLERTON

FULLERTON, CA · ~139,461 people served

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

PWSID

CA3010010

State

California

City

FULLERTON

Population served

139,461

Primary source

SWP

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

PFOS

Perfluorooctanesulfonic acid

12 ppt

limit 4 ppt

Above EPA limit · 3.0×

PFOA

Perfluorooctanoic acid

10 ppt

limit 4 ppt

Above EPA limit · 2.6×

PFHxS

Perfluorohexanesulfonic acid

5.2 ppt

limit 10 ppt

Near EPA limit

Lithium

28,143 ppt

limit —

No federal limit

PFPeA

13 ppt

limit —

No federal limit

PFHxA

11 ppt

limit —

No federal limit

PFBS

7.6 ppt

limit —

No federal limit

PFBA

5.9 ppt

limit —

No federal limit

PFHpA

4.8 ppt

limit —

No federal limit

Violations & enforcement

4

Violations on record

0

Unaddressed

2

Health-based

12

Enforcement actions

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

Max contaminant level (MCL) · Lead & Copper Rule health-based began Dec 2017 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Oct 2012 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Oct 2012 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 1992 Resolved

Recent enforcement actions

  • State action · SFL Apr 2018
  • State action · SOX Jan 2018
  • State action · SIA Feb 2013
  • State action · SOX Feb 2013
  • EPA/federal action · EOX Dec 2003
  • EPA/federal action · EOX Mar 2000
  • EPA/federal action · EOX Dec 1993
  • EPA/federal action · EO+ Nov 1993

This profile is built from EPA public records for system CA3010010 — 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.