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Water system · PWSID CA2710010

CWSC SALINAS

SAN JOSE, CA · ~123,679 people served

Check your exact address → SAN JOSE overview
100
Excellent
PurityRadar safety score

PWSID

CA2710010

State

California

City

SAN JOSE

Population served

123,679

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

Lithium

11,000 ppt

limit —

No federal limit

Violations & enforcement

10

Violations on record

0

Unaddressed

3

Health-based

23

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement May 2013. Official EPA record →

Monitoring & reporting · Nitrate began Jan 2012 Resolved
Monitoring & reporting · Total coliform began Apr 2011 Resolved
Monitoring & reporting · Total coliform began Mar 2011 Resolved
Monitoring & reporting · Total coliform began Nov 2010 Resolved
Max contaminant level (MCL) · Nitrate health-based began Jul 2010 Resolved
Max contaminant level (MCL) · Nitrate health-based began Nov 2007 Resolved
Monitoring & reporting · Nitrate began Jan 2007 Resolved
Monitoring & reporting · Nitrate began Sep 2005 Resolved
Monitoring & reporting · Nitrate began Jan 2002 Resolved
Max contaminant level (MCL) · Total coliform health-based began Oct 1992 Resolved

Recent enforcement actions

  • State action · SFL May 2013
  • State action · SOX Mar 2013
  • State action · SFJ Jun 2011
  • State action · SFJ Jun 2011
  • State action · SOX May 2011
  • State action · SOX Apr 2011
  • State action · SOX Dec 2010
  • State action · SOX Oct 2010

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

Nitrate

1 station · latest Apr 2021

11.1 · max 20.2 mg/L · 6

Arsenic

1 station · latest Jul 2021

8.1 · max 8.1 ug/L · 4

Lead

1 station · latest Jul 2021

1.6 · max 1.6 ug/L · 2

Copper

1 station · latest Sep 2020

1.1 · max 1.1 ug/l · 1

Fluoride

1 station · latest Sep 2020

0.19 · max 0.19 mg/l · 1

Uranium

1 station · latest Sep 2020

10.6 · max 10.6 ug/l · 1

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 CA2710010 — 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.