FORT BLISS MAIN POST AREA

SAN DIMAS, CA · ~28,000 people served

Check your exact address → SAN DIMAS overview

100

Excellent

PurityRadar safety score

PWSID

TX0710020

State

California

City

SAN DIMAS

Population served

28,000

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

Latest detections from EPA’s UCMR5 monitoring (through Jul 2024). Levels in parts per trillion (ppt).

PFHxS

Perfluorohexanesulfonic acid

3.7 ppt

limit 10 ppt

Below EPA limit

Lithium

34,700 ppt

limit —

No federal limit

PFHxA

3.1 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

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

Monitoring & reporting · EPA contaminant 0999 began Apr 2018 Resolved

Monitoring & reporting · Lead & Copper Rule began Dec 2013 Resolved

Other · EPA contaminant 7000 began Jul 2013 Resolved

Other · EPA contaminant 7500 began Jul 2008 Resolved

Max contaminant level (MCL) · Total coliform health-based began Feb 2008 Resolved

Monitoring & reporting · Total coliform began Nov 2007 Resolved

Recent enforcement actions

State action · SIF Dec 2018
State action · SOX Oct 2018
State action · SIA Oct 2018
State action · SIE Oct 2018
State action · SOX Oct 2016
State action · SOX Nov 2013
State action · SIA Nov 2013
State action · SIA Jun 2008

This profile is built from EPA public records for system TX0710020 — 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.