Is THUNDERBIRD CWD required to publish a Consumer Confidence Report?

Yes. THUNDERBIRD CWD 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 THUNDERBIRD CWD’s next Consumer Confidence Report due?

THUNDERBIRD CWD’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.

APPLE VALLEY, CA · San Bernardino County

THUNDERBIRD CWD Water System

Consumer Confidence Report status

THUNDERBIRD CWD 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 THUNDERBIRD CWD.

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): CA3600306
System type: Community Water System
Population served: 2,098
Service connections: 318
Ownership: local government
Water source: groundwater (wells)

THUNDERBIRD CWD is one of 728 community water systems in California in the 501 to 3,300 people size category, serving 2,098 people from groundwater.

As of August 1, 2026, its federal record holds 9 entries between 1980 and 2018, all of which EPA lists as closed. Nothing has been added since 2018.

Of the 9, 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 Total Coliform Rules, and the Radionuclides and Revised Rad Rule.

Violation history

Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
February 1, 2018 – February 28, 2018
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
June 1, 2009 – June 30, 2009
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
October 1, 1981 – September 30, 1982
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Fluoride
October 30, 1980 – February 28, 1981
Archived
Notification, Public
—
No contaminant on record
October 30, 1980 – February 28, 1981
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
October 30, 1980 – October 29, 1981
Archived
Notification, Public
—
No contaminant on record
July 30, 1980 – October 29, 1980
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Fluoride
June 1, 1980 – May 31, 1982
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Fluoride
March 30, 1980 – April 29, 1980
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
February 1, 2018 – February 28, 2018	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
June 1, 2009 – June 30, 2009	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
October 1, 1981 – September 30, 1982	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived
October 30, 1980 – February 28, 1981	Maximum Contaminant Level Violation, Single Sample	Fluoride	Health-based	Archived
October 30, 1980 – February 28, 1981	Notification, Public	—	—	Archived
October 30, 1980 – October 29, 1981	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived
July 30, 1980 – October 29, 1980	Notification, Public	—	—	Archived
June 1, 1980 – May 31, 1982	Maximum Contaminant Level Violation, Single Sample	Fluoride	Health-based	Archived
March 30, 1980 – April 29, 1980	Maximum Contaminant Level Violation, Single Sample	Fluoride	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

August 28, 2025State Administrative/Compliance Order without penalty issued1 linked violation
December 30, 2024State Compliance achieved1 linked violation
January 18, 2024State Administrative/Compliance Order without penalty issued1 linked violation
September 5, 2018State Compliance achieved1 linked violation
April 6, 2018State Compliance achieved5 linked violations
August 25, 2009State Administrative/Compliance Order without penalty issued3 linked violations
June 25, 2004State Violation/Reminder Notice2 linked violations
June 25, 2004State Compliance achieved26 linked violations
May 11, 2002State Compliance achieved4 linked violations

Common questions

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

HEINRICHS, DOUGLAS

760-247-2503

APPLE VALLEY, CA 92308