BELLFLOWER MUNICIPAL WATER SYSTEM

ROSEMEAD, CA · ~5,999 people served

Check your exact address → ROSEMEAD overview

Fair

PurityRadar safety score

PWSID

CA1910018

State

California

City

ROSEMEAD

Population served

5,999

Primary source

SWP

Score history

▼ 54 points — the score moved from 100 to 46 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 46

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

PFOS

Perfluorooctanesulfonic acid

29 ppt

limit 4 ppt

Above EPA limit · 7.3×

PFOA

Perfluorooctanoic acid

6.1 ppt

limit 4 ppt

Above EPA limit · 1.5×

PFHxS

Perfluorohexanesulfonic acid

4.9 ppt

limit 10 ppt

Below EPA limit

PFBA

5.2 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jun 2009. Official EPA record →

Max contaminant level (MCL) · Total coliform health-based began Jun 2009 Resolved

Max contaminant level (MCL) · Total coliform health-based began Feb 2006 Resolved

Max contaminant level (MCL) · EPA contaminant 2984 health-based began Sep 1996 Resolved

Recent enforcement actions

State action · SIA Jun 2009
State action · SOX Jun 2009
State action · SIA Mar 2006
State action · SOX Mar 2006
EPA/federal action · EOX Mar 2000
State action · SFJ Jun 1997
State action · SOX Jun 1997
EPA/federal action · EFJ May 1993

This profile is built from EPA public records for system CA1910018 — 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.