Is RANCHO ROBLES MUTUAL WATER COMPANY required to publish a Consumer Confidence Report?

Yes. RANCHO ROBLES MUTUAL WATER COMPANY 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 RANCHO ROBLES MUTUAL WATER COMPANY’s next Consumer Confidence Report due?

RANCHO ROBLES MUTUAL WATER COMPANY’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.

SAN MARTIN, CA · Santa Clara County

RANCHO ROBLES MUTUAL WATER COMPANY Water System

Consumer Confidence Report status

RANCHO ROBLES MUTUAL WATER COMPANY 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 RANCHO ROBLES MUTUAL WATER COMPANY.

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): CA4300577
System type: Community Water System
Population served: 103
Service connections: 37
Ownership: privately owned
Water source: groundwater (wells)

RANCHO ROBLES MUTUAL WATER COMPANY is one of 3,951 community water systems in California in the 500 or fewer people size category, serving 103 people from groundwater.

As of August 1, 2026, its federal record holds 12 entries between 1980 and 1984, all of which EPA lists as closed. Nothing has been added since 1984.

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, inorganic chemicals, and the Radionuclides and Revised Rad Rule.

Violation history

Notification, Public
—
No contaminant on record
September 1, 1984 – September 30, 1984
Archived
Notification, Public
—
No contaminant on record
August 1, 1984 – August 31, 1984
Archived
Notification, Public
—
No contaminant on record
July 1, 1984 – July 31, 1984
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
May 1, 1984 – May 31, 1984
Archived
Notification, Public
—
No contaminant on record
May 1, 1984 – May 31, 1984
Archived
Notification, Public
—
No contaminant on record
February 1, 1984 – February 29, 1984
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
February 1, 1984 – February 29, 1984
Archived
Notification, Public
—
No contaminant on record
December 1, 1982 – December 31, 1982
Archived
Notification, Public
—
No contaminant on record
November 1, 1982 – November 30, 1982
Archived
Notification, Public
—
No contaminant on record
October 1, 1982 – October 31, 1982
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

Archived closed in EPA's records (typically due to age or a data correction)

Period	Violation	Contaminant / rule	Health-based	Status
September 1, 1984 – September 30, 1984	Notification, Public	—	—	Archived
August 1, 1984 – August 31, 1984	Notification, Public	—	—	Archived
July 1, 1984 – July 31, 1984	Notification, Public	—	—	Archived
May 1, 1984 – May 31, 1984	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
May 1, 1984 – May 31, 1984	Notification, Public	—	—	Archived
February 1, 1984 – February 29, 1984	Notification, Public	—	—	Archived
February 1, 1984 – February 29, 1984	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
December 1, 1982 – December 31, 1982	Notification, Public	—	—	Archived
November 1, 1982 – November 30, 1982	Notification, Public	—	—	Archived
October 1, 1982 – October 31, 1982	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

Archived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

May 30, 1997State Compliance achieved6 linked violations
May 22, 1997State Violation/Reminder Notice6 linked violations

Common questions

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

MERRELL, BRANDON

831-419-2103

SAN MARTIN, CA 95046