EL MONTE-CITY, WATER DEPT.

EL MONTE, CA · ~22,968 people served

Check your exact address → EL MONTE overview

Excellent

PurityRadar safety score

PWSID

CA1910038

State

California

City

EL MONTE

Population served

22,968

Primary source

Groundwater

Score history

▼ 10 points — the score moved from 100 to 90 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 90

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 Mar 2024). Levels in parts per trillion (ppt).

PFOS

Perfluorooctanesulfonic acid

4.4 ppt

limit 4 ppt

Above EPA limit · 1.1×

PFHxS

Perfluorohexanesulfonic acid

3.2 ppt

limit 10 ppt

Below EPA limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Dec 2012. Official EPA record →

Max contaminant level (MCL) · Total coliform health-based began Aug 2012 Resolved

Monitoring & reporting · Total coliform began Aug 2000 Resolved

Monitoring & reporting · Total coliform began Nov 1996 Resolved

Max contaminant level (MCL) · Total coliform health-based began Nov 1996 Resolved

Max contaminant level (MCL) · Total coliform health-based began Oct 1993 Resolved

Monitoring & reporting · Total coliform began Oct 1993 Resolved

Monitoring & reporting · EPA contaminant 2987 began Aug 1993 Resolved

Max contaminant level (MCL) · Total coliform health-based began Jun 1993 Resolved

Max contaminant level (MCL) · Total coliform health-based began Sep 1992 Resolved

Recent enforcement actions

State action · SFL Dec 2012
State action · SOX Sep 2012
State action · SFL Nov 2000
State action · SOX Nov 2000
EPA/federal action · EOX Mar 2000
State action · SOX Jan 1997
State action · SFL Jan 1997
State action · SOX Dec 1994

This profile is built from EPA public records for system CA1910038 — 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.