Havasu Lake, 09

Chemehuevi Water 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): 090600125
System type: Community Water System
Population served: 4,400
Service connections: 603
Ownership: Native American tribal
Water source: groundwater (wells)

Violation history

Monitoring, Regular
—
Nitrate
January 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Fluoride
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
BHC-GAMMA
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Endrin
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Methoxychlor
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Toxaphene
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Dalapon
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Diquat
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Endothall
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Glyphosate
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
OXAMYL
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Simazine
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Picloram
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Dinoseb
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Hexachlorocyclopentadiene
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Carbofuran
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Atrazine
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
LASSO
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
2,3,7,8-TCDD
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
—
2,4-D
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
2,4,5-TP
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
HEXACHLOROBENZENE
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Benzo(a)pyrene
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Pentachlorophenol
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
—
Nitrate
January 1, 2021 – December 31, 2021
Resolved
Monitoring, Regular
—
Combined Uranium
January 1, 2020 – December 31, 2025
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
January 1, 2020 – December 31, 2025
Archived
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2006 – December 13, 2006
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2006 – December 31, 2006
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2006 – December 31, 2006
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2005 – December 31, 2005
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2005 – December 31, 2005
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2004 – December 31, 2004
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2002 – December 31, 2002
Resolved
Monitoring, Regular
—
Radium-226
January 1, 2002 – December 31, 2002
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 1998 – August 31, 1998
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
February 1, 1996 – February 29, 1996
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
January 1, 1996 – January 31, 1996
Resolved
Monitoring, Regular
—
Antimony, Total
January 1, 1996 – December 31, 1996
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 1996 – December 31, 1996
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 1996 – December 31, 1996
Resolved
Monitoring, Regular
—
CYANIDE
January 1, 1996 – December 31, 1996
Resolved
Monitoring, Regular
—
Nitrate-Nitrite
January 1, 1996 – December 31, 1996
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
May 1, 1995 – May 31, 1995
Resolved
Monitoring, Regular
—
CYANIDE
January 1, 1993 – December 31, 1995
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 1993 – December 31, 1995
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 1993 – December 31, 1995
Resolved
Monitoring, Regular
—
Antimony, Total
January 1, 1993 – December 31, 1995
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
May 1, 1992 – May 31, 1992
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
December 1, 1991 – December 31, 1991
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
July 1, 1991 – July 31, 1991
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
July 1, 1991 – July 31, 1991
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
June 1, 1991 – June 30, 1991
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
September 1, 1990 – September 30, 1990
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
September 1, 1990 – September 30, 1990
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
April 1, 1990 – April 30, 1990
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
March 1, 1990 – March 31, 1990
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
November 1, 1989 – November 30, 1989
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
November 1, 1989 – November 30, 1989
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 1989 – October 31, 1989
Resolved

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

Period	Violation	Contaminant / rule	Health-based	Status
January 1, 2025 – December 31, 2025	Monitoring, Regular	Nitrate	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Fluoride	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	BHC-GAMMA	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Endrin	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Methoxychlor	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Toxaphene	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Dalapon	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Diquat	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Endothall	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Glyphosate	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	OXAMYL	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Simazine	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Picloram	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Dinoseb	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Hexachlorocyclopentadiene	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Carbofuran	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Atrazine	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	LASSO	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	2,3,7,8-TCDD	—	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	2,4-D	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	2,4,5-TP	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	HEXACHLOROBENZENE	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Benzo(a)pyrene	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Pentachlorophenol	—	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, 2021 – December 31, 2021	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2020 – December 31, 2025	Monitoring, Regular	Combined Uranium	—	Archived
January 1, 2020 – December 31, 2025	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived
July 1, 2006 – December 13, 2006	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring and Reporting (DBP)	TTHM	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring and Reporting (DBP)	TTHM	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring and Reporting (DBP)	TTHM	—	Resolved
January 1, 2002 – December 31, 2002	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2002 – December 31, 2002	Monitoring, Regular	Radium-226	—	Resolved
August 1, 1998 – August 31, 1998	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
February 1, 1996 – February 29, 1996	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
January 1, 1996 – January 31, 1996	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 1996 – December 31, 1996	Monitoring, Regular	Antimony, Total	—	Resolved
January 1, 1996 – December 31, 1996	Monitoring, Regular	Beryllium, Total	—	Resolved
January 1, 1996 – December 31, 1996	Monitoring, Regular	Thallium, Total	—	Resolved
January 1, 1996 – December 31, 1996	Monitoring, Regular	CYANIDE	—	Resolved
January 1, 1996 – December 31, 1996	Monitoring, Regular	Nitrate-Nitrite	—	Resolved
May 1, 1995 – May 31, 1995	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 1993 – December 31, 1995	Monitoring, Regular	CYANIDE	—	Resolved
January 1, 1993 – December 31, 1995	Monitoring, Regular	Beryllium, Total	—	Resolved
January 1, 1993 – December 31, 1995	Monitoring, Regular	Thallium, Total	—	Resolved
January 1, 1993 – December 31, 1995	Monitoring, Regular	Antimony, Total	—	Resolved
May 1, 1992 – May 31, 1992	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
December 1, 1991 – December 31, 1991	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
July 1, 1991 – July 31, 1991	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
July 1, 1991 – July 31, 1991	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
June 1, 1991 – June 30, 1991	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
September 1, 1990 – September 30, 1990	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
September 1, 1990 – September 30, 1990	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
April 1, 1990 – April 30, 1990	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
March 1, 1990 – March 31, 1990	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
November 1, 1989 – November 30, 1989	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
November 1, 1989 – November 30, 1989	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
October 1, 1989 – October 31, 1989	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved

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

Enforcement actions

August 17, 2023Federal Compliance achieved1 linked violation
August 28, 2017Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
May 17, 2011Federal Technical Assistance Visitgeneral compliance action — not tied to a specific violation on record
May 17, 2011Federal Technical Assistance Visitgeneral compliance action — not tied to a specific violation on record
March 31, 2010Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
March 31, 2010Federal Compliance achieved1 linked violation
March 31, 2010Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
March 31, 2010Federal Compliance achieved1 linked violation
March 31, 2010Federal Compliance achieved1 linked violation
March 31, 2010Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
March 31, 2010Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
March 31, 2010Federal Compliance achieved1 linked violation
March 31, 2010Federal Compliance achieved1 linked violation
March 31, 2010Federal Compliance achieved1 linked violation
March 31, 2010Federal Compliance achieved1 linked violation
March 31, 2010Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
March 31, 2010Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
March 31, 2010Federal Compliance achieved1 linked violation
March 31, 2010Federal Compliance achieved1 linked violation
March 31, 2010Federal Compliance achieved1 linked violation
March 31, 2010Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
March 31, 2010Federal Compliance achieved1 linked violation
March 31, 2010Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
March 31, 2010Federal Compliance achieved1 linked violation
March 31, 2010Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
March 31, 2010Federal Compliance achieved1 linked violation
March 31, 2010Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
March 31, 2010Federal Compliance achieved1 linked violation
March 31, 2010Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
March 31, 2010Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
March 31, 2010Federal Compliance achieved1 linked violation
March 31, 2010Federal Compliance achieved1 linked violation
March 31, 2010Federal Compliance achieved1 linked violation
March 31, 2010Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
March 31, 2010Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
March 31, 2010Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
March 31, 2010Federal Compliance achieved1 linked violation
March 31, 2010Federal Compliance achieved1 linked violation
March 31, 2010Federal Compliance achieved1 linked violation
March 31, 2010Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
March 31, 2010Federal Compliance achieved1 linked violation
March 31, 2010Federal Compliance achieved1 linked violation
March 31, 2010Federal Compliance achieved1 linked violation
March 31, 2010Federal Compliance achieved1 linked violation
March 31, 2010Federal Compliance achieved1 linked violation
July 11, 2007Federal Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
June 14, 2007Federal Technical Assistance Visitgeneral compliance action — not tied to a specific violation on record
March 22, 2007Federal Technical Assistance Visitgeneral compliance action — not tied to a specific violation on record
March 15, 2007Federal Technical Assistance Visitgeneral compliance action — not tied to a specific violation on record
March 8, 2007Federal Technical Assistance Visitgeneral compliance action — not tied to a specific violation on record
February 22, 2007Federal Technical Assistance Visitgeneral compliance action — not tied to a specific violation on record
December 13, 2006Federal Compliance achieved1 linked violation
August 17, 2005Federal Technical Assistance Visitgeneral compliance action — not tied to a specific violation on record
August 4, 2005Federal Technical Assistance Visitgeneral compliance action — not tied to a specific violation on record
March 31, 2005Federal Technical Assistance Visitgeneral compliance action — not tied to a specific violation on record
February 24, 2004Federal Compliance achieved1 linked violation
February 24, 2004Federal Compliance achieved1 linked violation
February 24, 2004Federal Compliance achieved1 linked violation
February 24, 2004Federal Compliance achieved1 linked violation
February 24, 2004Federal Compliance achieved1 linked violation
February 24, 2004Federal Compliance achieved1 linked violation
February 24, 2004Federal Compliance achieved1 linked violation
February 24, 2004Federal Compliance achieved1 linked violation
February 24, 2004Federal Compliance achieved1 linked violation
February 24, 2004Federal Compliance achieved1 linked violation

Contact

Chemehuevi Indian Tribe

Phone not on record

Havasu Lake, CA 92363