Is CITY OF DAVIS required to publish a Consumer Confidence Report?

Yes. CITY OF DAVIS 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 CITY OF DAVIS’s next Consumer Confidence Report due?

CITY OF DAVIS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

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.

DAVIS, CA · Yolo County

CITY OF DAVIS Water System

Consumer Confidence Report status

CITY OF DAVIS 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 CITY OF DAVIS.

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): 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)

CITY OF DAVIS is one of 376 community water systems in California in the 10,001 to 100,000 people size category, serving 67,457 people from surface water.

As of August 1, 2026, its federal record holds 24 entries between 1987 and 1990, all of which EPA lists as closed. Nothing has been added since 1990.

None of the 24 are monitoring or reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset; these involve water-quality, treatment, or public-notice findings instead. The record involves inorganic chemicals.

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
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
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
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
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

March 10, 2005State Public Notification received4 linked violations

Common questions

Is CITY OF DAVIS required to publish a Consumer Confidence Report?: Yes. CITY OF DAVIS 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 CITY OF DAVIS’s next Consumer Confidence Report due?: CITY OF DAVIS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does CITY OF DAVIS have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for CITY OF DAVIS.
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

GRYCZKO, STAN

530-757-5686

DAVIS, CA 95616