BRENTWOOD, CA · Contra Costa County

BRENTWOOD Water System

Current status

No open violations on record as of July 4, 2026.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace California’s official records. Always confirm current status with California before making decisions based on this information.

System facts

System ID (PWSID): CA0710004
System type: Community Water System
Population served: 64,513
Service connections: 21,441
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
February 1, 2007 – February 28, 2007
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2005 – March 31, 2005
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 1993 – October 31, 1993
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
January 1, 1992 – January 31, 1992
Resolved
Notification, Public
—
No contaminant on record
November 1, 1989 – November 30, 1989
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
July 1, 1983 – July 31, 1983
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
October 1, 1982 – October 31, 1982
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
July 1, 1982 – September 30, 1982
Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Period	Violation	Contaminant / rule	Health-based	Status
February 1, 2007 – February 28, 2007	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 2005 – March 31, 2005	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
October 1, 1993 – October 31, 1993	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 1992 – January 31, 1992	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
November 1, 1989 – November 30, 1989	Notification, Public	—	—	Archived
July 1, 1983 – July 31, 1983	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
October 1, 1982 – October 31, 1982	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
July 1, 1982 – September 30, 1982	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

February 27, 2018State Compliance achieved2 linked violations
March 26, 2007State Administrative/Compliance Order without penalty issued2 linked violations
May 16, 2005State Compliance achieved3 linked violations
April 30, 2000State Compliance achieved2 linked violations
September 16, 1999State Violation/Reminder Notice2 linked violations
January 8, 1997State Formal Notice of Violation issued2 linked violations
July 30, 1996State Compliance achieved3 linked violations
January 31, 1996State Compliance achieved2 linked violations
January 16, 1996State Administrative Penalty assessed2 linked violations
December 30, 1995State Compliance achieved1 linked violation
November 30, 1993State Compliance achieved1 linked violation
March 9, 1993State Formal Notice of Violation issued5 linked violations
December 30, 1992State Compliance achieved1 linked violation
February 29, 1992State Compliance achieved1 linked violation

Contact

WOLFE, JAMES

925-516-6025

BRENTWOOD, CA 94513-7344