DAVIS, CA · Yolo County

CITY OF DAVIS 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): CA5710001
System type: Community Water System
Population served: 67,457
Service connections: 17,326
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Maximum Contaminant Level Violation, Single Sample
Health-based
Selenium
January 1, 1990 – December 31, 1994
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Selenium
November 1, 1989 – November 30, 1989
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Selenium
October 1, 1989 – October 31, 1989
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Selenium
September 1, 1989 – September 30, 1989
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Selenium
August 1, 1989 – August 31, 1989
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Selenium
July 1, 1989 – July 31, 1989
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Selenium
June 1, 1989 – June 30, 1989
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Selenium
May 1, 1989 – May 31, 1989
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Selenium
April 1, 1989 – April 30, 1989
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Selenium
March 1, 1989 – March 31, 1989
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Selenium
December 1, 1988 – December 31, 1988
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Selenium
October 1, 1988 – October 31, 1988
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Selenium
August 1, 1988 – August 31, 1988
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Selenium
July 1, 1988 – July 31, 1988
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Selenium
June 1, 1988 – June 30, 1988
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Selenium
May 1, 1988 – May 31, 1988
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Selenium
April 1, 1988 – April 30, 1988
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Selenium
March 1, 1988 – March 31, 1988
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Selenium
February 1, 1988 – February 29, 1988
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Selenium
January 1, 1988 – January 31, 1988
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Selenium
December 1, 1987 – December 31, 1987
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Selenium
November 1, 1987 – November 30, 1987
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Selenium
October 1, 1987 – October 31, 1987
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Selenium
September 1, 1987 – September 30, 1987
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Selenium
August 1, 1987 – August 31, 1987
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Selenium
July 1, 1987 – July 31, 1987
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Selenium
June 1, 1987 – June 30, 1987
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
January 1, 1990 – December 31, 1994	Maximum Contaminant Level Violation, Single Sample	Selenium	Health-based	Resolved
November 1, 1989 – November 30, 1989	Maximum Contaminant Level Violation, Single Sample	Selenium	Health-based	Archived
October 1, 1989 – October 31, 1989	Maximum Contaminant Level Violation, Single Sample	Selenium	Health-based	Archived
September 1, 1989 – September 30, 1989	Maximum Contaminant Level Violation, Single Sample	Selenium	Health-based	Archived
August 1, 1989 – August 31, 1989	Maximum Contaminant Level Violation, Single Sample	Selenium	Health-based	Archived
July 1, 1989 – July 31, 1989	Maximum Contaminant Level Violation, Single Sample	Selenium	Health-based	Archived
June 1, 1989 – June 30, 1989	Maximum Contaminant Level Violation, Single Sample	Selenium	Health-based	Archived
May 1, 1989 – May 31, 1989	Maximum Contaminant Level Violation, Single Sample	Selenium	Health-based	Archived
April 1, 1989 – April 30, 1989	Maximum Contaminant Level Violation, Single Sample	Selenium	Health-based	Archived
March 1, 1989 – March 31, 1989	Maximum Contaminant Level Violation, Single Sample	Selenium	Health-based	Archived
December 1, 1988 – December 31, 1988	Maximum Contaminant Level Violation, Single Sample	Selenium	Health-based	Archived
October 1, 1988 – October 31, 1988	Maximum Contaminant Level Violation, Single Sample	Selenium	Health-based	Archived
August 1, 1988 – August 31, 1988	Maximum Contaminant Level Violation, Single Sample	Selenium	Health-based	Archived
July 1, 1988 – July 31, 1988	Maximum Contaminant Level Violation, Single Sample	Selenium	Health-based	Archived
June 1, 1988 – June 30, 1988	Maximum Contaminant Level Violation, Single Sample	Selenium	Health-based	Archived
May 1, 1988 – May 31, 1988	Maximum Contaminant Level Violation, Single Sample	Selenium	Health-based	Archived
April 1, 1988 – April 30, 1988	Maximum Contaminant Level Violation, Single Sample	Selenium	Health-based	Archived
March 1, 1988 – March 31, 1988	Maximum Contaminant Level Violation, Single Sample	Selenium	Health-based	Archived
February 1, 1988 – February 29, 1988	Maximum Contaminant Level Violation, Single Sample	Selenium	Health-based	Archived
January 1, 1988 – January 31, 1988	Maximum Contaminant Level Violation, Single Sample	Selenium	Health-based	Archived
December 1, 1987 – December 31, 1987	Maximum Contaminant Level Violation, Single Sample	Selenium	Health-based	Archived
November 1, 1987 – November 30, 1987	Maximum Contaminant Level Violation, Single Sample	Selenium	Health-based	Archived
October 1, 1987 – October 31, 1987	Maximum Contaminant Level Violation, Single Sample	Selenium	Health-based	Archived
September 1, 1987 – September 30, 1987	Maximum Contaminant Level Violation, Single Sample	Selenium	Health-based	Archived
August 1, 1987 – August 31, 1987	Maximum Contaminant Level Violation, Single Sample	Selenium	Health-based	Archived
July 1, 1987 – July 31, 1987	Maximum Contaminant Level Violation, Single Sample	Selenium	Health-based	Archived
June 1, 1987 – June 30, 1987	Maximum Contaminant Level Violation, Single Sample	Selenium	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

No enforcement actions on record for this system.

Contact

GRYCZKO, STAN

530-757-5686

DAVIS, CA 95616