Chilchinbeto Community Day School BIA
Arizona - Community Water System - PWSID: NN0433002
System Information
| PWSID | NN0433002 |
| System Name | Chilchinbeto Community Day School BIA |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Federal |
| EPA Region | 09 |
| Serves School | Yes |
| Wholesaler | No |
| First Reported | Feb 2, 1984 |
| Last Reported | Jun 23, 2026 |
Location & Contact
| State | Arizona |
| City | Kayenta |
| ZIP Code | 86033 |
| Address | PO Box 740 |
| Organization | BIA Chilchinbeto Community School |
| Phone | 9286973800 |
Population & Service
| Population Served | 138 |
| Service Connections | 15 |
Drinking Water Violations (148)
This water system has 148 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | - | 4.0 mg/L | - | Archived | Jun 30, 2025 | - | |
| Jul 1, 2024 | Sep 30, 2024 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Sep 3, 2024 | - | |
| Apr 1, 2024 | Jun 30, 2024 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | May 1, 2024 | - | |
| Jan 1, 2024 | - | RPT | No | No | - | - | - | Resolved | Feb 20, 2024 | - | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Mar 31, 2024 | - | |
| Oct 1, 2023 | - | RPT | No | No | - | - | - | Resolved | Nov 30, 2023 | - | |
| Apr 1, 2023 | Jun 30, 2023 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | May 3, 2023 | - | |
| Oct 1, 2022 | - | RPT | No | No | - | - | - | Resolved | Nov 17, 2022 | - | |
| May 1, 2020 | - | RPT | No | No | - | - | - | Resolved | Jun 19, 2020 | - | |
| Apr 1, 2016 | - | Other | No | No | - | - | - | Resolved | Dec 20, 2017 | - | |
| Apr 1, 2016 | - | Other | No | No | - | - | - | Resolved | Dec 20, 2017 | - | |
| Apr 1, 2016 | - | Other | No | No | - | - | - | Resolved | Dec 20, 2017 | - | |
| Oct 1, 2013 | - | MR | No | Yes | - | - | - | Resolved | Dec 20, 2017 | - | |
| Oct 1, 2013 | - | MR | No | Yes | - | - | - | Resolved | Dec 20, 2017 | - | |
| Oct 1, 2013 | - | MR | No | Yes | - | - | - | Resolved | Dec 20, 2017 | - | |
| Dec 1, 2012 | Dec 31, 2012 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2012 | - | |
| Dec 1, 2012 | Dec 31, 2012 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2012 | - | |
| Nov 1, 2011 | Nov 30, 2011 | MR | No | No | - | 5% of samples | - | Resolved | Nov 30, 2011 | - | |
| Jan 1, 2010 | Dec 31, 2010 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Jan 1, 2010 | Dec 31, 2010 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Jan 1, 2008 | - | MR | No | No | - | TT | - | Resolved | Feb 7, 2012 | - | |
| Jan 1, 2008 | - | MR | No | No | - | TT | - | Resolved | Feb 7, 2012 | - | |
| Jan 1, 2008 | - | MR | No | No | - | TT | - | Resolved | Feb 7, 2012 | - | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | - | 0.00000003 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | - | 0.00000003 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | - | 0.00000003 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | - | 0.00000003 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Jul 1, 2006 | - | Other | No | No | - | - | - | Resolved | Mar 9, 2007 | - | |
| Jul 1, 2006 | - | Other | No | No | - | - | - | Resolved | Mar 9, 2007 | - | |
| Jul 1, 2005 | - | Other | No | No | - | - | - | Resolved | Mar 9, 2007 | - | |
| Jul 1, 2005 | - | Other | No | No | - | - | - | Resolved | Mar 9, 2007 | - | |
| Jan 1, 2004 | Dec 31, 2004 | MR | No | No | - | 0.0002 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2004 | Dec 31, 2004 | MR | No | No | - | 0.2 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2004 | Dec 31, 2004 | MR | No | No | - | 0.2 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2004 | Dec 31, 2004 | MR | No | No | - | 0.04 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2004 | Dec 31, 2004 | MR | No | No | - | 0.04 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2004 | Dec 31, 2004 | MR | No | No | - | 0.02 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2004 | Dec 31, 2004 | MR | No | No | - | 0.02 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2004 | Dec 31, 2004 | MR | No | No | - | 0.002 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2004 | Dec 31, 2004 | MR | No | No | - | 0.002 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2004 | Dec 31, 2004 | MR | No | No | - | 0.005 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2004 | Dec 31, 2004 | MR | No | No | - | 0.05 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2004 | Dec 31, 2004 | MR | No | No | - | 0.1 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2004 | Dec 31, 2004 | MR | No | No | - | 0.04 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2004 | Dec 31, 2004 | MR | No | No | - | 0.0005 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2004 | Dec 31, 2004 | MR | No | No | - | 0.0005 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2004 | Dec 31, 2004 | MR | No | No | - | 0.003 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2004 | Dec 31, 2004 | MR | No | No | - | 0.003 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2004 | Dec 31, 2004 | MR | No | No | - | - | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2004 | Dec 31, 2004 | MR | No | No | - | 0.007 mg/L | - | Resolved | Dec 31, 2004 | - |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.