Is TIERRA BUENA MHP #1 required to publish a Consumer Confidence Report?

Yes. TIERRA BUENA MHP #1 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 TIERRA BUENA MHP #1’s next Consumer Confidence Report due?

TIERRA BUENA MHP #1’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.

ZAMORA, CA · Sutter County

TIERRA BUENA MHP #1 Water System

Consumer Confidence Report status

TIERRA BUENA MHP #1 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 TIERRA BUENA MHP #1.

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): CA5100112
System type: Community Water System
Population served: 50
Service connections: 17
Ownership: privately owned
Water source: groundwater (wells)

TIERRA BUENA MHP #1 is one of 3,951 community water systems in California in the 500 or fewer people size category, serving 50 people from groundwater.

As of August 1, 2026, its federal record holds 14 entries between 1979 and 2022, all of which EPA lists as closed. Nothing has been added since 2022.

Of the 14, 3 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, the Miscellaneous Other Rules, and the Radionuclides and Revised Rad Rule.

Violation history

Maximum Contaminant Level Violation, Average
Health-based
Nitrate
July 1, 2022 – September 30, 2022
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
April 2, 1986 – April 1, 1987
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
August 26, 1985 – August 25, 1986
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
January 1, 1983 – January 31, 1983
Archived
Notification, Public
—
No contaminant on record
January 1, 1983 – January 31, 1983
Archived
Notification, Public
—
No contaminant on record
December 1, 1982 – December 31, 1982
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
October 1, 1982 – October 31, 1982
Archived
Notification, Public
—
No contaminant on record
October 1, 1982 – October 31, 1982
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
October 22, 1981 – October 21, 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
Monitoring, Check/Repeat/Confirmation
—
Nitrate
June 1, 1979 – May 31, 1983
Archived

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

Period	Violation	Contaminant / rule	Health-based	Status
July 1, 2022 – September 30, 2022	Maximum Contaminant Level Violation, Average	Nitrate	Health-based	Archived
April 2, 1986 – April 1, 1987	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
August 26, 1985 – August 25, 1986	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
August 1, 1984 – August 31, 1984	Notification, Public	—	—	Archived
July 1, 1984 – July 31, 1984	Notification, Public	—	—	Archived
January 1, 1983 – January 31, 1983	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
January 1, 1983 – January 31, 1983	Notification, Public	—	—	Archived
December 1, 1982 – December 31, 1982	Notification, Public	—	—	Archived
October 1, 1982 – October 31, 1982	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
October 1, 1982 – October 31, 1982	Notification, Public	—	—	Archived
October 22, 1981 – October 21, 1982	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	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
June 1, 1979 – May 31, 1983	Monitoring, Check/Repeat/Confirmation	Nitrate	—	Archived

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

Enforcement actions

March 19, 2004State Violation/Reminder Notice6 linked violations
October 8, 2002State Formal Notice of Violation issued3 linked violations
September 28, 2001State Violation/Reminder Notice9 linked violations

Common questions

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

CHARTER, RICHARD J

510-666-7000

ZAMORA, CA 95698