GUADALUPE WATER DEPARTMENT

GUADALUPE, CA · ~8,897 people served

Check your exact address → GUADALUPE overview

100

Excellent

PurityRadar safety score

PWSID

CA4210003

State

California

City

GUADALUPE

Population served

8,897

Primary source

SWP

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

Lithium

13,700 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2008. Official EPA record →

Other began Apr 2007 Resolved

Other began Apr 2006 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2006 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2006 Resolved

Other · EPA contaminant 7000 began Jul 2005 Resolved

Other began Apr 2005 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2005 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2005 Resolved

Recent enforcement actions

State action · SOX Jan 2008
State action · SOX Nov 2006
State action · SOX Sep 2006
State action · SFL Jul 2006
State action · SFL Jul 2006
State action · SOX Jul 2006
State action · SFL Feb 2006
State action · SOX Jan 2006

This profile is built from EPA public records for system CA4210003 — 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.