BRENTWOOD, CA · Contra Costa County
BRENTWOOD Water System
Consumer Confidence Report status
BRENTWOOD must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.
As of August 1, 2026, EPA's federal records show no open violations for BRENTWOOD.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 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)
BRENTWOOD is one of 376 community water systems in California in the 10,001 to 100,000 people size category, serving 64,513 people from surface water.
As of August 1, 2026, its federal record holds 7 entries between 1982 and 2007, all of which EPA lists as closed. Nothing has been added since 2007.
Of the 7, 1 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves inorganic chemicals, the Total Coliform Rules, and the Stage 1 Disinfectants and Disinfection Byproducts Rule.
Violation history
Maximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
February 1, 2007 – February 28, 2007
ResolvedMonitoring and Reporting (DBP)
—TTHM
January 1, 2005 – March 31, 2005
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
December 1, 1996 – December 31, 1996
ResolvedNotification, Public
—No contaminant on record
November 1, 1989 – November 30, 1989
ArchivedMaximum Contaminant Level Violation, Single Sample
Health-basedNitrate
July 1, 1983 – July 31, 1983
ArchivedMaximum Contaminant Level Violation, Single Sample
Health-basedNitrate
October 1, 1982 – October 31, 1982
ArchivedMaximum Contaminant Level Violation, Single Sample
Health-basedNitrate
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) | TTHM | — | Resolved |
| December 1, 1996 – December 31, 1996 | 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
- 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
- January 31, 1997State Compliance achieved2 linked violations
- January 8, 1997State Formal Notice of Violation issued2 linked violations
- July 30, 1996State Compliance achieved3 linked violations
- July 10, 1996State Formal Notice of Violation issued8 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 28, 1993State Compliance achieved4 linked violations
- December 30, 1992State Compliance achieved1 linked violation
- December 21, 1992State Administrative Penalty assessed3 linked violations
- February 29, 1992State Compliance achieved1 linked violation
Common questions
Is BRENTWOOD required to publish a Consumer Confidence Report?
- Yes. BRENTWOOD is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is BRENTWOOD’s next Consumer Confidence Report due?
- BRENTWOOD’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does BRENTWOOD have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for BRENTWOOD.
What is a Consumer Confidence Report?
- A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.
Contact
WOLFE, JAMES
925-516-6025
BRENTWOOD, CA 94513-7344