Is DOUBLETREE RANCH WATER SYSTEM required to publish a Consumer Confidence Report?

Yes. DOUBLETREE RANCH WATER SYSTEM 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 DOUBLETREE RANCH WATER SYSTEM’s next Consumer Confidence Report due?

DOUBLETREE RANCH WATER SYSTEM’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.

LIVERMORE, CA · Contra Costa County

DOUBLETREE RANCH WATER SYSTEM Water System

Consumer Confidence Report status

DOUBLETREE RANCH WATER SYSTEM 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 DOUBLETREE RANCH WATER SYSTEM.

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): CA0707615
System type: Community Water System
Population served: 66
Service connections: 20
Ownership: privately owned
Water source: groundwater (wells)

DOUBLETREE RANCH WATER SYSTEM is one of 3,951 community water systems in California in the 500 or fewer people size category, serving 66 people from groundwater.

As of August 1, 2026, its federal record holds 12 entries between 1980 and 2014, all of which EPA lists as closed. Nothing has been added since 2014.

Of the 12, 2 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 the Miscellaneous Other Rules, the Radionuclides and Revised Rad Rule, and inorganic chemicals.

Violation history

Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2014 – December 31, 2014
Resolved
Notification, Public
—
No contaminant on record
September 1, 1984 – September 30, 1984
Archived
Notification, Public
—
No contaminant on record
May 1, 1984 – May 31, 1984
Archived
Notification, Public
—
No contaminant on record
March 1, 1984 – March 31, 1984
Archived
Notification, Public
—
No contaminant on record
January 1, 1984 – January 31, 1984
Archived
Notification, Public
—
No contaminant on record
September 1, 1983 – September 30, 1983
Archived
Notification, Public
—
No contaminant on record
July 1, 1983 – July 31, 1983
Archived
Notification, Public
—
No contaminant on record
June 1, 1983 – June 30, 1983
Archived
Notification, Public
—
No contaminant on record
March 1, 1983 – March 31, 1983
Archived
Notification, Public
—
No contaminant on record
February 1, 1983 – February 28, 1983
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
October 1, 1981 – September 30, 1982
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
October 30, 1980 – October 29, 1981
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, 2014 – December 31, 2014	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
September 1, 1984 – September 30, 1984	Notification, Public	—	—	Archived
May 1, 1984 – May 31, 1984	Notification, Public	—	—	Archived
March 1, 1984 – March 31, 1984	Notification, Public	—	—	Archived
January 1, 1984 – January 31, 1984	Notification, Public	—	—	Archived
September 1, 1983 – September 30, 1983	Notification, Public	—	—	Archived
July 1, 1983 – July 31, 1983	Notification, Public	—	—	Archived
June 1, 1983 – June 30, 1983	Notification, Public	—	—	Archived
March 1, 1983 – March 31, 1983	Notification, Public	—	—	Archived
February 1, 1983 – February 28, 1983	Notification, Public	—	—	Archived
October 1, 1981 – September 30, 1982	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived
October 30, 1980 – October 29, 1981	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived

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

Enforcement actions

October 27, 2016State Administrative/Compliance Order without penalty issued16 linked violations
October 30, 2010State Compliance achieved7 linked violations
January 22, 2009State Formal Notice of Violation issued3 linked violations
March 10, 2008State Public Notification requested31 linked violations
January 11, 2008State Public Notification issued7 linked violations
January 11, 2008State Formal Notice of Violation issued4 linked violations
March 10, 2007State Public Notification requested2 linked violations
March 10, 2007State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
December 10, 2006State Formal Notice of Violation issued1 linked violation
December 10, 2006State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
December 10, 2006State Public Notification requested1 linked violation
September 10, 2006State Formal Notice of Violation issued2 linked violations
September 10, 2006State Formal Notice of Violation issued1 linked violation
May 30, 2003State Compliance achieved6 linked violations

Common questions

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

KOSIC, TOM

925-784-8860

LIVERMORE, CA 94551