Brooks, 09

Yocha Dehe Potable Water System Water System

Current status

No open violations on record as of July 4, 2026.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace EPA Region 9’s official records. Always confirm current status with EPA Region 9 before making decisions based on this information.

System facts

System ID (PWSID): 090605107
System type: Community Water System
Population served: 12,800
Service connections: 56
Ownership: Native American tribal
Water source: groundwater (wells)

Violation history

Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
July 1, 2023 – September 30, 2023
Resolved
Monitoring, Regular
—
Combined Uranium
July 1, 2023 – September 30, 2023
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
July 1, 2023 – September 30, 2023
Resolved
Monitoring, Regular
—
Toxaphene
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Hexachlorocyclopentadiene
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Heptachlor
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Heptachlor epoxide
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
HEXACHLOROBENZENE
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
ETHYLENE DIBROMIDE
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Chlordane
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Endrin
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
BHC-GAMMA
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Methoxychlor
January 1, 2023 – December 31, 2025
Archived
Monitoring, Routine (IDSE)
—
Total Haloacetic Acids (HAA5)
January 1, 2015 – December 31, 2015
Resolved
Monitoring, Routine (IDSE)
—
TTHM
January 1, 2015 – December 31, 2015
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
April 1, 2007 – April 30, 2007
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
August 1, 2005 – August 31, 2005
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
July 1, 2005 – July 31, 2005
Resolved

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
July 1, 2023 – September 30, 2023	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
July 1, 2023 – September 30, 2023	Monitoring, Regular	Combined Uranium	—	Resolved
July 1, 2023 – September 30, 2023	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
January 1, 2023 – December 31, 2025	Monitoring, Regular	Toxaphene	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Hexachlorocyclopentadiene	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Heptachlor	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Heptachlor epoxide	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	HEXACHLOROBENZENE	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Chlordane	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Endrin	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	BHC-GAMMA	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Methoxychlor	—	Archived
January 1, 2015 – December 31, 2015	Monitoring, Routine (IDSE)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2015 – December 31, 2015	Monitoring, Routine (IDSE)	TTHM	—	Resolved
April 1, 2007 – April 30, 2007	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
August 1, 2005 – August 31, 2005	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
July 1, 2005 – July 31, 2005	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved

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

Enforcement actions

February 3, 2026Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
February 3, 2026Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
November 17, 2023Federal Compliance achieved1 linked violation
November 17, 2023Federal Compliance achieved2 linked violations
September 19, 2016Federal Compliance achieved1 linked violation
September 19, 2016Federal Compliance achieved1 linked violation
January 21, 2010Federal Compliance achieved1 linked violation
January 21, 2010Federal Compliance achieved1 linked violation
January 21, 2010Federal Compliance achieved1 linked violation
August 20, 2007Federal Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
April 30, 2007Federal Public Notification received from PWSgeneral compliance action — not tied to a specific violation on record
March 30, 2006Federal Technical Assistance Visitgeneral compliance action — not tied to a specific violation on record
March 29, 2006Federal Technical Assistance Visitgeneral compliance action — not tied to a specific violation on record

Contact

Yocha Dehe Wintun Nation

5307963400

Brooks, CA 95606