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Water system · PWSID CA0710004

BRENTWOOD

BRENTWOOD, CA · ~64,513 people served

Check your exact address → BRENTWOOD overview
100
Excellent
PurityRadar safety score

PWSID

CA0710004

State

California

City

BRENTWOOD

Population served

64,513

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

Lithium

70,700 ppt

limit —

No federal limit

Violations & enforcement

14

Violations on record

0

Unaddressed

11

Health-based

31

Enforcement actions

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

Max contaminant level (MCL) · Total coliform health-based began Feb 2007 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2005 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2005 Resolved
Max contaminant level (MCL) · Total coliform health-based began Mar 2000 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jan 2000 Resolved
Max contaminant level (MCL) · Total coliform health-based began Dec 1996 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jun 1996 Resolved
Max contaminant level (MCL) · Total coliform health-based began Dec 1995 Resolved
Max contaminant level (MCL) · Total coliform health-based began Nov 1995 Resolved
Max contaminant level (MCL) · Total coliform health-based began Oct 1993 Resolved
Monitoring & reporting · Total coliform began Feb 1993 Resolved
Max contaminant level (MCL) · Total coliform health-based began Oct 1992 Resolved

Recent enforcement actions

  • State action · SOX Feb 2018
  • State action · SOX Feb 2018
  • State action · SFL Mar 2007
  • State action · SOX Mar 2007
  • State action · SIA May 2005
  • State action · SOX May 2005
  • State action · SFJ Dec 2000
  • State action · SOX Apr 2000

This profile is built from EPA public records for system CA0710004 — 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.