SCE/BIG CREEK POWERHOUSE 1

ROSEMEAD, CA · ~104 people served

Check your exact address → ROSEMEAD overview

100

Excellent

PurityRadar safety score

PWSID

CA1009111

State

California

City

ROSEMEAD

Population served

104

Primary source

Surface water

Score history

No change since tracking began Jun 18, 2026.

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

2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.

PFAS & contaminant readings

No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

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

Treatment technique · EPA contaminant 0200 health-based began Apr 2018 Resolved

Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Jul 2015 Resolved

Monitoring & reporting · Lead & Copper Rule began Oct 2014 Resolved

Monitoring & reporting · Total coliform began Apr 2008 Resolved

Monitoring & reporting · Total coliform began Mar 2008 Resolved

Monitoring & reporting · Total coliform began Feb 2008 Resolved

Monitoring & reporting · Nitrate began Jan 2008 Resolved

Monitoring & reporting · Total coliform began Sep 2007 Resolved

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

Recent enforcement actions

State action · SOX Dec 2018
State action · SOX Jun 2018
State action · SFL May 2018
State action · SOX Mar 2018
State action · SFL Dec 2015
State action · SFL Feb 2015
State action · SIA Jun 2009
State action · SIA May 2008

This profile is built from EPA public records for system CA1009111 — 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.