Is KEYES COMMUNITY SERVICES DIST. required to publish a Consumer Confidence Report?

Yes. KEYES COMMUNITY SERVICES DIST. 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 KEYES COMMUNITY SERVICES DIST.’s next Consumer Confidence Report due?

KEYES COMMUNITY SERVICES DIST.’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.

KEYES, CA · Stanislaus County

KEYES COMMUNITY SERVICES DIST. Water System

Consumer Confidence Report status

KEYES COMMUNITY SERVICES DIST. 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 KEYES COMMUNITY SERVICES DIST..

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): CA5010009
System type: Community Water System
Population served: 5,672
Service connections: 1,477
Ownership: local government
Water source: groundwater (wells)

KEYES COMMUNITY SERVICES DIST. is one of 278 community water systems in California in the 3,301 to 10,000 people size category, serving 5,672 people from groundwater.

As of August 1, 2026, its federal record holds 19 entries between 1987 and 2019, all of which EPA lists as closed. Nothing has been added since 2019.

Of the 19, 4 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 and the Miscellaneous Other Rules.

Violation history

Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2019 – December 31, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2019 – March 31, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2018 – September 30, 2018
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2018 – March 31, 2018
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2016 – June 30, 2016
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2011 – March 31, 2011
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2010 – March 31, 2010
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2009 – December 31, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2009 – June 30, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2008 – December 31, 2008
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2008 – September 30, 2008
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2008 – June 30, 2008
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2007 – June 30, 2007
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
Arsenic
August 1, 1987 – August 31, 1987
Archived
Monitoring, Regular
—
Selenium
August 1, 1987 – August 31, 1987
Archived
Monitoring, Regular
—
Nitrate
August 1, 1987 – August 31, 1987
Archived
Monitoring, Regular
—
Fluoride
August 1, 1987 – August 31, 1987
Archived
Notification, Public
—
No contaminant on record
August 1, 1987 – August 31, 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
October 1, 2019 – December 31, 2019	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
January 1, 2019 – March 31, 2019	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
July 1, 2018 – September 30, 2018	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
January 1, 2018 – March 31, 2018	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
April 1, 2016 – June 30, 2016	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
January 1, 2011 – March 31, 2011	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
January 1, 2010 – March 31, 2010	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
October 1, 2009 – December 31, 2009	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
April 1, 2009 – June 30, 2009	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
October 1, 2008 – December 31, 2008	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
July 1, 2008 – September 30, 2008	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
April 1, 2008 – June 30, 2008	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
April 1, 2007 – June 30, 2007	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
October 1, 2006 – December 31, 2006	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
August 1, 1987 – August 31, 1987	Monitoring, Regular	Arsenic	—	Archived
August 1, 1987 – August 31, 1987	Monitoring, Regular	Selenium	—	Archived
August 1, 1987 – August 31, 1987	Monitoring, Regular	Nitrate	—	Archived
August 1, 1987 – August 31, 1987	Monitoring, Regular	Fluoride	—	Archived
August 1, 1987 – August 31, 1987	Notification, Public	—	—	Archived

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

Enforcement actions

January 5, 2009State Administrative/Compliance Order without penalty issued70 linked violations

Common questions

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

POWERS, MICHAEL

209-668-8341

KEYES, CA 95328