Maricopa, 09

Ak-Chin Village 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): 090400090
System type: Community Water System
Population served: 11,646
Service connections: 364
Ownership: Native American tribal
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
August 1, 2024 – August 31, 2024
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
August 1, 2024 – December 9, 2024
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
September 21, 2023 – December 20, 2023
Resolved
Monitoring, Routine (IDSE)
—
Total Haloacetic Acids (HAA5)
July 1, 2020 – September 30, 2020
Resolved
Monitoring, Routine (IDSE)
—
TTHM
July 1, 2020 – September 30, 2020
Resolved
Single Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
July 1, 2017 – July 31, 2017
Resolved
Monitoring, Regular
—
Combined Uranium
April 1, 2013 – June 30, 2013
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
April 1, 2013 – June 30, 2013
Resolved
Monitoring, Regular
—
Combined Uranium
January 1, 2013 – March 31, 2013
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
January 1, 2012 – January 31, 2012
Resolved
Monitoring, Regular
—
Nitrate
October 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
Nitrate
July 1, 2011 – September 30, 2011
Resolved
Monitoring, Regular
—
Nitrate
April 1, 2010 – June 30, 2010
Resolved
Monitoring, Regular
—
Nitrate
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
July 1, 2009 – July 31, 2009
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
June 1, 2009 – June 30, 2009
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2005 – December 31, 2005
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 2003 – October 31, 2003
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2002 – March 31, 2003
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrite
January 1, 2002 – December 31, 2002
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
January 1, 2002 – January 31, 2002
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Fluoride
January 1, 2002 – December 31, 2002
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
September 1, 2001 – September 30, 2001
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 2001 – July 31, 2001
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrite
January 1, 2001 – December 31, 2001
Resolved
Monitoring, Regular
—
2,3,7,8-TCDD
January 1, 2001 – December 31, 2001
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
January 1, 2001 – December 31, 2001
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 2000 – June 30, 2000
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2000 – December 31, 2000
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 1996 – October 31, 1996
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 1996 – April 30, 1996
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
March 1, 1996 – March 31, 1996
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
February 1, 1996 – February 29, 1996
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 1994 – June 30, 1994
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 1994 – April 30, 1994
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
March 1, 1994 – March 31, 1994
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
November 1, 1993 – November 30, 1993
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 1993 – August 31, 1993
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
September 1, 1992 – September 30, 1992
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
August 1, 1992 – August 31, 1992
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 1992 – July 31, 1992
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
August 1, 2024 – August 31, 2024	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
August 1, 2024 – December 9, 2024	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
September 21, 2023 – December 20, 2023	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
July 1, 2020 – September 30, 2020	Monitoring, Routine (IDSE)	Total Haloacetic Acids (HAA5)	—	Resolved
July 1, 2020 – September 30, 2020	Monitoring, Routine (IDSE)	TTHM	—	Resolved
July 1, 2017 – July 31, 2017	Single Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
April 1, 2013 – June 30, 2013	Monitoring, Regular	Combined Uranium	—	Resolved
April 1, 2013 – June 30, 2013	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
January 1, 2013 – March 31, 2013	Monitoring, Regular	Combined Uranium	—	Resolved
January 1, 2012 – January 31, 2012	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
October 1, 2011 – December 31, 2011	Monitoring, Regular	Nitrate	—	Resolved
July 1, 2011 – September 30, 2011	Monitoring, Regular	Nitrate	—	Resolved
April 1, 2010 – June 30, 2010	Monitoring, Regular	Nitrate	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	Nitrate	—	Resolved
July 1, 2009 – July 31, 2009	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
June 1, 2009 – June 30, 2009	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Nitrate	—	Resolved
October 1, 2003 – October 31, 2003	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
July 1, 2002 – March 31, 2003	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 1, 2002 – December 31, 2002	Maximum Contaminant Level Violation, Single Sample	Nitrite	Health-based	Resolved
January 1, 2002 – January 31, 2002	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 2002 – December 31, 2002	Maximum Contaminant Level Violation, Average	Fluoride	Health-based	Resolved
September 1, 2001 – September 30, 2001	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2001 – July 31, 2001	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2001 – December 31, 2001	Maximum Contaminant Level Violation, Single Sample	Nitrite	Health-based	Resolved
January 1, 2001 – December 31, 2001	Monitoring, Regular	2,3,7,8-TCDD	—	Resolved
January 1, 2001 – December 31, 2001	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
June 1, 2000 – June 30, 2000	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2000 – December 31, 2000	Monitoring, Regular	Nitrate	—	Resolved
October 1, 1996 – October 31, 1996	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
April 1, 1996 – April 30, 1996	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
March 1, 1996 – March 31, 1996	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
February 1, 1996 – February 29, 1996	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
June 1, 1994 – June 30, 1994	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
April 1, 1994 – April 30, 1994	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
March 1, 1994 – March 31, 1994	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
November 1, 1993 – November 30, 1993	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved
August 1, 1993 – August 31, 1993	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
September 1, 1992 – September 30, 1992	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
August 1, 1992 – August 31, 1992	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 1992 – July 31, 1992	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

April 3, 2025Federal Violation/Reminder Notice1 linked violation
April 1, 2025Federal Violation/Reminder Notice1 linked violation
December 9, 2024Federal Compliance achieved1 linked violation
September 9, 2024Federal Compliance achieved1 linked violation
December 20, 2023Federal Compliance achieved1 linked violation
December 2, 2020Federal Compliance achieved1 linked violation
December 2, 2020Federal Compliance achieved1 linked violation
April 25, 2018Federal Compliance achieved1 linked violation
February 8, 2014Federal Compliance achieved1 linked violation
February 8, 2014Federal Compliance achieved1 linked violation
August 19, 2013Federal Compliance achieved1 linked violation
June 11, 2012Federal Compliance achieved1 linked violation
June 11, 2012Federal Compliance achieved1 linked violation
June 11, 2012Federal Compliance achieved1 linked violation
December 27, 2011Federal Technical Assistance Visitgeneral compliance action — not tied to a specific violation on record
December 15, 2011Federal Technical Assistance Visitgeneral compliance action — not tied to a specific violation on record
November 14, 2011Federal Technical Assistance Visitgeneral compliance action — not tied to a specific violation on record
February 24, 2011Federal Technical Assistance Visitgeneral compliance action — not tied to a specific violation on record
February 22, 2011Federal Technical Assistance Visitgeneral compliance action — not tied to a specific violation on record
November 8, 2010Federal Compliance achieved1 linked violation
November 8, 2010Federal Compliance achieved1 linked violation
February 26, 2010Federal Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
August 1, 2009Federal Compliance achieved1 linked violation
August 1, 2009Federal Compliance achieved1 linked violation
April 7, 2009Federal Technical Assistance Visitgeneral compliance action — not tied to a specific violation on record
July 1, 2008Federal Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
March 26, 2007Federal Compliance achieved1 linked violation
March 26, 2007Federal Compliance achieved1 linked violation
March 15, 2007Federal Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
April 4, 2006Federal Compliance achieved1 linked violation
February 14, 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
February 23, 2004Federal Compliance achieved1 linked violation
February 23, 2004Federal Compliance achieved1 linked violation
February 23, 2004Federal Compliance achieved1 linked violation
January 3, 2004Federal Compliance achieved1 linked violation
March 31, 2003Federal Compliance achieved1 linked violation
January 6, 2003Federal Compliance achieved1 linked violation
January 6, 2003Federal Compliance achieved1 linked violation
January 6, 2003Federal Compliance achieved1 linked violation
January 6, 2003Federal Compliance achieved1 linked violation
January 6, 2003Federal Compliance achieved1 linked violation
June 9, 1997Federal Compliance achieved1 linked violation
June 9, 1997Federal Compliance achieved1 linked violation
June 9, 1997Federal Compliance achieved1 linked violation
June 9, 1997Federal Compliance achieved1 linked violation
January 5, 1995Federal Compliance achieved1 linked violation
January 5, 1995Federal Compliance achieved1 linked violation
January 5, 1995Federal Compliance achieved1 linked violation
January 5, 1995Federal Compliance achieved1 linked violation
January 5, 1995Federal Compliance achieved1 linked violation
January 4, 1993Federal Compliance achieved1 linked violation
January 4, 1993Federal Compliance achieved1 linked violation
January 4, 1993Federal Compliance achieved1 linked violation
July 1, 1991Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
January 3, 1987Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record

Contact

Ak-Chin Indian Community

5205681024

Maricopa, AZ 85138