SIERRA WATER RESOURCES - SIERRA CITY

CLAREMONT, CA · ~324 people served

Check your exact address → CLAREMONT overview

100

Excellent

PurityRadar safety score

PWSID

CA4600017

State

California

City

CLAREMONT

Population served

324

Primary source

Groundwater

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 Nov 2018. Official EPA record →

Monitoring · Lead & Copper Rule began Aug 2017 Resolved

Other began Jun 2016 Resolved

Other began Nov 2015 Resolved

Monitoring & reporting · Total coliform began Oct 2015 Resolved

Monitoring & reporting · Total coliform began Sep 2015 Resolved

Monitoring & reporting · Total coliform began Aug 2015 Resolved

Max contaminant level (MCL) · Total coliform health-based began Apr 2015 Resolved

Monitoring & reporting · Total coliform began Feb 2015 Resolved

Monitoring & reporting · Total coliform began Jan 2015 Resolved

Max contaminant level (MCL) · Total coliform health-based began Aug 2014 Resolved

Max contaminant level (MCL) · Total coliform health-based began Mar 2014 Resolved

Monitoring & reporting · Total coliform began Sep 2011 Resolved

Recent enforcement actions

State action · SOX Nov 2018
State action · SOX Dec 2017
State action · SOX Sep 2017
State action · SFL Sep 2017
State action · SFL Aug 2017
State action · SFL Nov 2016
State action · SFO Oct 2016
State action · SFL Jul 2016

This profile is built from EPA public records for system CA4600017 — 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.