Public water system record

AK-Chin Village

Serves Ak-Chin Village and Maricopa, Pinal County, AZ · 11,646 people served

Federal records show 1 health-based violation and 5 monitoring/reporting issues for AK-Chin Village in the last ten years. The most serious issue in this window was a resolved Interim Enhanced Surface Water Treatment Rule violation.

  • 090400090
  • MARICOPA
  • AZ
  • 11,646 served

System profile

Source water Surface water
ZIP 85138
EPA system ID 090400090

Verify this system on EPA ECHO →

Health-based violations, last 10 years
1
Resolved
1
Unresolved
0
Any acute record
Yes
Monitoring issues, last 10 years
5

Key facts

  • AK-Chin Village draws water from 1 well and 1 surface water intake.
  • Record on file since 1992, with 9 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 348 unknown out of 348 service lines.

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Health-based violations

Since October 2016

Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.

Contaminant Rule family Start date Status Acute
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
120 Jul 1, 2017 Resolved Yes

Monitoring and reporting issues

Since October 2016

Missed tests or reports, not contaminants found above a limit.

Issue Start date Status
Public Notice
OTHER
Aug 1, 2024 Resolved
Revised Total Coliform Rule
Monitoring violation
Aug 1, 2024 Resolved
Lead and Copper Rule
Monitoring and reporting
Sep 21, 2023 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
Jul 1, 2020 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
Jul 1, 2020 Resolved

Full record since 1992

EPA's records for AK-Chin Village go back to 1992. Before October 19, 2016 they list 9 health-based violations (9 resolved) and 27 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 3 9
2000s 6 11
2010 to October 18, 2016 0 7
October 19, 2016 to 2019 1 0
2020s 0 5

Most recent health-based violation before October 19, 2016: Total Coliform, began June 2009, Resolved.

Show all 9 health-based violations before October 19, 2016
Contaminant Start date Status
Total Coliform
Contaminant limit exceeded
Jun 1, 2009 Resolved
Total Coliform
Contaminant limit exceeded
Oct 1, 2003 Resolved
Total Coliform
Contaminant limit exceeded
Jan 1, 2002 Resolved
Fluoride
Contaminant limit exceeded
Jan 1, 2002 Resolved
Nitrite (acute)
Contaminant limit exceeded
Measured 1 mg/L, federal limit 1 mg/L (at or just above the limit)
Jan 1, 2002 Resolved
Nitrite (acute)
Contaminant limit exceeded
Measured 6 mg/L, federal limit 1 mg/L (6 times the limit)
Jan 1, 2001 Resolved
Total Coliform
Contaminant limit exceeded
Mar 1, 1996 Resolved
Total Coliform
Contaminant limit exceeded
Feb 1, 1996 Resolved
Total Coliform
Contaminant limit exceeded
Aug 1, 1993 Resolved

What the violations mean

Interim Enhanced Surface Water Treatment Rule

1 incident

The system did not meet a filtration or treatment requirement for surface water

Inadequate treatment of surface water can let pathogens such as Cryptosporidium and Giardia through

Where the water comes from

AK-Chin Village draws water from 1 well and 1 surface water intake.

Annual water quality report

AK-Chin Village must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.

Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.

Find a posted report with EPA's Consumer Confidence Report search

Testing your own water

To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by EPA Region 9.