CITY OF ARCADIA

ARCADIA, CA · ~51,361 people served

Check your exact address → ARCADIA overview

Fair

PurityRadar safety score

PWSID

CA1910003

State

California

City

ARCADIA

Population served

51,361

Primary source

Groundwater

Score history

▼ 33 points — the score moved from 100 to 67 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 67

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 Feb 2024). Levels in parts per trillion (ppt).

PFOS

Perfluorooctanesulfonic acid

10 ppt

limit 4 ppt

Above EPA limit · 2.5×

PFHxS

Perfluorohexanesulfonic acid

4.8 ppt

limit 10 ppt

Below EPA limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Apr 2016. Official EPA record →

Other · EPA contaminant 0700 began Feb 2016 Resolved

Monitoring & reporting · Total coliform began Jan 2016 Resolved

Monitoring & reporting · EPA contaminant 2039 began Apr 2015 Resolved

Monitoring & reporting · Nitrate began Jan 2008 Resolved

Monitoring & reporting · Nitrate began Oct 2007 Resolved

Monitoring & reporting · Nitrate began Jul 2007 Resolved

Max contaminant level (MCL) · Nitrate health-based began Jun 2006 Resolved

Monitoring & reporting · Lead & Copper Rule began Jun 1993 Resolved

Recent enforcement actions

State action · SOX Apr 2016
State action · SFL Mar 2016
State action · SOX Dec 2015
State action · SFL May 2015
State action · SOX Jul 2008
State action · SFL May 2008
State action · SIA May 2008
State action · SOX May 2008

This profile is built from EPA public records for system CA1910003 — 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.