Dilkon-Indian Wells-Greasewood-White Cone NTUA
Arizona - Community Water System - PWSID: NN0400342
System Information
| PWSID | NN0400342 |
| System Name | Dilkon-Indian Wells-Greasewood-White Cone NTUA |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Native American |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | Yes |
| First Reported | Feb 2, 1984 |
| Last Reported | Jun 23, 2026 |
Location & Contact
| State | Arizona |
| City | Fort Defiance |
| ZIP Code | 86504 |
| Address | PO Box 170 |
| Organization | Schools |
| Phone | 9287295721 |
Population & Service
| Population Served | 4,986 |
| Service Connections | 1,458 |
Drinking Water Violations (233)
This water system has 233 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan 1, 2024 | Mar 31, 2024 | MCL | Yes | No | .08703 MG/L | 0.080 mg/L | - | Resolved | Mar 31, 2024 | - | |
| Jan 1, 2024 | Mar 31, 2024 | MCL | Yes | No | .08703 MG/L | 0.080 mg/L | - | Resolved | Mar 31, 2024 | - | |
| Oct 1, 2023 | Dec 31, 2023 | MCL | Yes | No | .1117 MG/L | 0.080 mg/L | - | Resolved | Dec 31, 2023 | - | |
| Oct 1, 2023 | Dec 31, 2023 | MCL | Yes | No | .1117 MG/L | 0.080 mg/L | - | Resolved | Dec 31, 2023 | - | |
| Jul 1, 2023 | Sep 30, 2023 | MCL | Yes | No | .1112 MG/L | 0.080 mg/L | - | Resolved | Sep 30, 2023 | - | |
| Jul 1, 2023 | Sep 30, 2023 | MCL | Yes | No | .1112 MG/L | 0.080 mg/L | - | Resolved | Sep 30, 2023 | - | |
| Apr 1, 2023 | Jun 30, 2023 | MCL | Yes | No | .117 MG/L | 0.080 mg/L | - | Resolved | Jun 30, 2023 | - | |
| Apr 1, 2023 | Jun 30, 2023 | MCL | Yes | No | .117 MG/L | 0.080 mg/L | - | Resolved | Jun 30, 2023 | - | |
| Jan 1, 2023 | Mar 31, 2023 | MCL | Yes | No | .1393 MG/L | 0.080 mg/L | - | Resolved | Mar 31, 2023 | - | |
| Jan 1, 2023 | Mar 31, 2023 | MCL | Yes | No | .1393 MG/L | 0.080 mg/L | - | Resolved | Mar 31, 2023 | - | |
| Oct 1, 2022 | Dec 31, 2022 | MCL | Yes | No | .1405 MG/L | 0.080 mg/L | - | Resolved | Dec 31, 2022 | - | |
| Oct 1, 2022 | Dec 31, 2022 | MCL | Yes | No | .1405 MG/L | 0.080 mg/L | - | Resolved | Dec 31, 2022 | - | |
| Jul 1, 2022 | - | Other | No | No | - | - | - | Resolved | Oct 4, 2022 | - | |
| Jul 1, 2022 | Jul 31, 2022 | MON | No | Yes | - | - | - | Resolved | Jul 31, 2022 | - | |
| Jul 1, 2022 | Sep 30, 2022 | MCL | Yes | No | .1034 MG/L | 0.080 mg/L | - | Resolved | Sep 30, 2022 | - | |
| Jul 1, 2022 | Sep 30, 2022 | MCL | Yes | No | .1034 MG/L | 0.080 mg/L | - | Resolved | Sep 30, 2022 | - | |
| Apr 1, 2022 | Jun 30, 2022 | MCL | Yes | No | .0868 MG/L | 0.080 mg/L | - | Resolved | Jun 30, 2022 | - | |
| Apr 1, 2022 | Jun 30, 2022 | MCL | Yes | No | .0868 MG/L | 0.080 mg/L | - | Resolved | Jun 30, 2022 | - | |
| Apr 1, 2022 | - | Other | No | No | - | - | - | Resolved | Apr 7, 2022 | - | |
| Jan 1, 2022 | Mar 31, 2022 | MCL | Yes | No | .0924 MG/L | 0.080 mg/L | - | Resolved | Mar 31, 2022 | - | |
| Jan 1, 2022 | Mar 31, 2022 | MCL | Yes | No | .0924 MG/L | 0.080 mg/L | - | Resolved | Mar 31, 2022 | - | |
| Oct 1, 2021 | Dec 31, 2021 | MCL | Yes | No | .0847 MG/L | 0.080 mg/L | - | Resolved | Dec 31, 2021 | - | |
| Oct 1, 2021 | Dec 31, 2021 | MCL | Yes | No | .0847 MG/L | 0.080 mg/L | - | Resolved | Dec 31, 2021 | - | |
| Jul 1, 2021 | Sep 30, 2021 | MCL | Yes | No | .1027 MG/L | 0.080 mg/L | - | Resolved | Sep 30, 2021 | - | |
| Jul 1, 2021 | Sep 30, 2021 | MCL | Yes | No | .1027 MG/L | 0.080 mg/L | - | Resolved | Sep 30, 2021 | - | |
| Apr 1, 2021 | Jun 30, 2021 | MCL | Yes | No | .1245 MG/L | 0.080 mg/L | - | Resolved | Jun 30, 2021 | - | |
| Apr 1, 2021 | Jun 30, 2021 | MCL | Yes | No | .1245 MG/L | 0.080 mg/L | - | Resolved | Jun 30, 2021 | - | |
| Apr 1, 2021 | - | Other | No | No | - | - | - | Resolved | Jul 14, 2021 | - | |
| Jan 1, 2021 | Mar 31, 2021 | MCL | Yes | No | .1283 MG/L | 0.080 mg/L | - | Resolved | Mar 31, 2021 | - | |
| Jan 1, 2021 | Mar 31, 2021 | MCL | Yes | No | .1283 MG/L | 0.080 mg/L | - | Resolved | Mar 31, 2021 | - | |
| Oct 1, 2020 | Dec 31, 2020 | MCL | Yes | No | .1458 MG/L | 0.080 mg/L | - | Resolved | Dec 31, 2020 | - | |
| Oct 1, 2020 | Dec 31, 2020 | MCL | Yes | No | .1458 MG/L | 0.080 mg/L | - | Resolved | Dec 31, 2020 | - | |
| Jul 1, 2020 | Sep 30, 2020 | MCL | Yes | No | .1435 MG/L | 0.080 mg/L | - | Resolved | Sep 30, 2020 | - | |
| Jul 1, 2020 | Sep 30, 2020 | MCL | Yes | No | .1435 MG/L | 0.080 mg/L | - | Resolved | Sep 30, 2020 | - | |
| Apr 1, 2020 | - | Other | No | No | - | - | - | Resolved | Apr 3, 2020 | - | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | .1037 MG/L | 0.080 mg/L | - | Resolved | Jun 30, 2020 | - | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | .1037 MG/L | 0.080 mg/L | - | Resolved | Jun 30, 2020 | - | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | .1052 MG/L | 0.080 mg/L | - | Resolved | Mar 31, 2020 | - | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | .1052 MG/L | 0.080 mg/L | - | Resolved | Mar 31, 2020 | - | |
| Oct 1, 2019 | Dec 31, 2019 | MCL | Yes | No | .1109 MG/L | 0.080 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Oct 1, 2019 | Dec 31, 2019 | MCL | Yes | No | .1109 MG/L | 0.080 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jul 1, 2019 | Sep 30, 2019 | MCL | Yes | No | .1119 MG/L | 0.080 mg/L | - | Resolved | Sep 30, 2019 | - | |
| Jul 1, 2019 | Sep 30, 2019 | MCL | Yes | No | .1119 MG/L | 0.080 mg/L | - | Resolved | Sep 30, 2019 | - | |
| Apr 1, 2019 | Jun 30, 2019 | MCL | Yes | No | .1313 MG/L | 0.080 mg/L | - | Resolved | Jun 30, 2019 | - | |
| Apr 1, 2019 | Jun 30, 2019 | MCL | Yes | No | .1313 MG/L | 0.080 mg/L | - | Resolved | Jun 30, 2019 | - | |
| Jan 1, 2019 | Mar 31, 2019 | MCL | Yes | No | .086 MG/L | 0.080 mg/L | - | Resolved | Mar 31, 2019 | - | |
| Jan 1, 2019 | Mar 31, 2019 | MCL | Yes | No | .086 MG/L | 0.080 mg/L | - | Resolved | Mar 31, 2019 | - | |
| Oct 1, 2018 | Dec 31, 2018 | MCL | Yes | No | .169 MG/L | 0.080 mg/L | - | Resolved | Dec 31, 2018 | - | |
| Oct 1, 2018 | Dec 31, 2018 | MCL | Yes | No | .169 MG/L | 0.080 mg/L | - | Resolved | Dec 31, 2018 | - | |
| Oct 1, 2018 | - | Other | No | No | - | - | - | Resolved | Dec 26, 2018 | - |
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.