Navajo National Monument

Arizona - Non-Transient Non-Community - PWSID: NN0400339

System Information

PWSIDNN0400339
System NameNavajo National Monument
System TypeNon-Transient Non-Community
Water SourceGround Water
Activity StatusActive
Owner TypeFederal
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedFeb 2, 1984
Last ReportedDec 31, 2025

Location & Contact

StateArizona
CityChinle
ZIP Code86503
AddressPO Box 588
OrganizationCanyon De Chelly National Monument
Phone9286745500

Population & Service

Population Served25
Service Connections14

Drinking Water Violations (348)

This water system has 348 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
Aug 1, 2025 - RPT No No - - - Unaddressed - -
Jul 1, 2025 - RPT No No - - - Unaddressed - -
Jun 1, 2025 - RPT No No - - - Resolved Sep 17, 2025 -
Dec 1, 2024 - RPT No No - - - Resolved Feb 14, 2025 -
Nov 1, 2024 - RPT No No - - - Resolved Feb 14, 2025 -
Apr 1, 2024 - RPT No No - - - Resolved Aug 21, 2024 -
Nov 1, 2023 - RPT No No - - - Resolved Jan 10, 2024 -
Jun 1, 2023 - RPT No No - - - Resolved Aug 4, 2023 -
May 1, 2023 - RPT No No - - - Resolved Aug 16, 2023 -
Apr 1, 2023 - RPT No No - - - Resolved May 26, 2023 -
Mar 1, 2023 - RPT No No - - - Resolved May 26, 2023 -
Feb 1, 2023 - RPT No No - - - Resolved May 26, 2023 -
Jan 1, 2023 - RPT No No - - - Resolved May 26, 2023 -
Oct 1, 2022 - RPT No No - - - Resolved Nov 16, 2022 -
Sep 1, 2022 - RPT No No - - - Resolved Nov 16, 2022 -
Aug 1, 2022 - RPT No No - - - Resolved Nov 16, 2022 -
Jun 1, 2022 - RPT No No - - - Resolved Jul 20, 2022 -
Nov 1, 2021 Nov 30, 2021 MON No Yes - - - Resolved Nov 30, 2021 -
Oct 1, 2021 Oct 31, 2021 MON No Yes - - - Resolved Oct 31, 2021 -
Jan 1, 2021 - RPT No No - - - Resolved Feb 24, 2021 -
Dec 1, 2020 - RPT No No - - - Resolved Feb 24, 2021 -
Nov 1, 2020 - RPT No No - - - Resolved Feb 24, 2021 -
Oct 1, 2020 - RPT No No - - - Resolved Feb 24, 2021 -
Jun 1, 2020 Jun 30, 2020 MON No Yes - - - Resolved Jun 30, 2020 -
May 1, 2020 May 31, 2020 MON No Yes - - - Resolved May 31, 2020 -
Apr 1, 2020 Apr 30, 2020 MON No Yes - - - Resolved Apr 30, 2020 -
Mar 1, 2020 - RPT No No - - - Resolved May 27, 2020 -
Feb 1, 2020 - RPT No No - - - Resolved May 27, 2020 -
Jan 1, 2020 - RPT No No - - - Resolved May 27, 2020 -
Nov 1, 2019 - RPT No No - - - Resolved Jan 14, 2020 -
Oct 1, 2019 - RPT No No - - - Resolved Jan 14, 2020 -
Apr 1, 2019 - RPT No No - - - Resolved Jun 13, 2019 -
Mar 1, 2019 - RPT No No - - - Resolved Jun 13, 2019 -
Feb 1, 2019 - RPT No No - - - Resolved Jun 13, 2019 -
Jan 1, 2018 Dec 31, 2018 MR No Yes - 1 mg/L - Resolved Dec 31, 2018 -
Jan 1, 2018 Dec 31, 2018 MR No Yes - 10 mg/L - Resolved Dec 31, 2018 -
Jan 1, 2018 Dec 31, 2018 MR No Yes - 1 mg/L - Resolved Dec 31, 2018 -
Jan 1, 2018 Dec 31, 2018 MR No Yes - 10 mg/L - Resolved Dec 31, 2018 -
Jan 1, 2018 Dec 31, 2018 MR No Yes - 1 mg/L - Resolved Dec 31, 2018 -
Jan 1, 2018 Dec 31, 2018 MR No Yes - 10 mg/L - Resolved Dec 31, 2018 -
Dec 1, 2017 Dec 31, 2017 MON No Yes - - - Resolved Dec 31, 2017 -
Dec 1, 2017 Dec 31, 2017 MON No Yes - - - Resolved Dec 31, 2017 -
Dec 1, 2017 Dec 31, 2017 MON No Yes - - - Resolved Dec 31, 2017 -
Apr 1, 2016 - Other No No - - - Resolved Oct 27, 2017 -
Apr 1, 2016 - Other No No - - - Resolved Oct 27, 2017 -
Apr 1, 2016 - Other No No - - - Resolved Oct 27, 2017 -
Dec 1, 2015 Dec 31, 2015 MR No No - 5% of samples - Resolved Dec 31, 2015 -
Dec 1, 2015 Dec 31, 2015 MR No No - 5% of samples - Resolved Dec 31, 2015 -
Dec 1, 2015 Dec 31, 2015 MR No No - 5% of samples - Resolved Dec 31, 2015 -
Jun 1, 2015 Jun 30, 2015 MR No No - 5% of samples - Resolved Jun 30, 2015 -

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.

Browse All Water Systems Water Systems in Arizona