CITY OF SAN CLEMENTE

SAN CLEMENTE, CA · ~51,545 people served

Check your exact address → SAN CLEMENTE overview

100

Excellent

PurityRadar safety score

PWSID

CA3010036

State

California

City

SAN CLEMENTE

Population served

51,545

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

Lithium

41,000 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2019. Official EPA record →

Monitoring & reporting · Total coliform began Dec 2004 Resolved

Monitoring & reporting · EPA contaminant 1006 began Oct 2004 Resolved

Recent enforcement actions

State action · SOX Jan 2019
State action · SOX Feb 2005
State action · SFJ Feb 2005

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Arsenic

6 stations · latest Feb 2020

2 · max 2.2 ug/L · 8

Copper

6 stations · latest Feb 2020

5.75 · max 13 ug/L · 8

Lead

6 stations · latest Feb 2020

5 · max 5 ug/L · 8

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system CA3010036 — 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.