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KOLIGANEK WATER SYSTEM

Alaska — Community Water System — PWSID: AK2260040

System Information

PWSIDAK2260040
System NameKOLIGANEK WATER SYSTEM
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeNative American
EPA Region10
Serves SchoolNo
WholesalerNo
First ReportedFeb 7, 1981
Last ReportedDec 19, 2025

Location & Contact

StateAlaska
CityKOLIGANEK
ZIP Code99576
AddressP.O. Box 5057
OrganizationTUNGUING, CHERYL
Phone907-596-3434

Population & Service

Population Served170
Service Connections40

Drinking Water Violations (483)

This water system has 483 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
Mar 20, 2024 — Lead and Copper Rule MR No No — TT — Resolved Jun 5, 2024 Lead and Copper Rule
Jan 1, 2024 Dec 31, 2024 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2024 Nitrate Rule
Jul 1, 2023 — Lead and Copper Rule MR No No — TT — Resolved Nov 30, 2023 Lead and Copper Rule
Jan 1, 2022 Dec 31, 2022 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2022 Nitrate Rule
Oct 1, 2021 — Consumer Confidence Rule Other No No — — — Resolved Dec 1, 2021 Consumer Confidence Rule
Jan 1, 2020 Dec 31, 2020 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2020 Nitrate Rule
Oct 1, 2019 — Consumer Confidence Rule Other No No — — — Resolved Sep 24, 2020 Consumer Confidence Rule
Sep 1, 2019 Sep 30, 2019 Revised Total Coliform Rule MON No Yes — — — Resolved Sep 30, 2019 Revised Total Coliform Rule
Aug 27, 2018 — Groundwater Rule TT Yes No — — — Resolved Jul 29, 2024 Ground Water Rule
Aug 27, 2018 — Groundwater Rule TT Yes No — — — Resolved Mar 16, 2021 Ground Water Rule
Aug 27, 2018 — Groundwater Rule TT Yes No — — — Resolved Oct 30, 2023 Ground Water Rule
Aug 27, 2018 — Groundwater Rule TT Yes No — — — Resolved Mar 16, 2021 Ground Water Rule
Aug 27, 2018 — Groundwater Rule TT Yes No — — — Resolved Mar 16, 2021 Ground Water Rule
Aug 1, 2018 Aug 31, 2018 Revised Total Coliform Rule MON No Yes — — — Resolved Aug 31, 2018 Revised Total Coliform Rule
Jul 1, 2018 Jul 31, 2018 Revised Total Coliform Rule MON No Yes — — — Resolved Jul 31, 2018 Revised Total Coliform Rule
Sep 1, 2017 Sep 30, 2017 Revised Total Coliform Rule MON No Yes — — — Resolved Sep 30, 2017 Revised Total Coliform Rule
Jul 1, 2017 Jul 31, 2017 Revised Total Coliform Rule MON No Yes — — — Resolved Jul 31, 2017 Revised Total Coliform Rule
Jan 1, 2017 Dec 31, 2017 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2017 Nitrate Rule
Jul 1, 2016 Jul 31, 2016 Revised Total Coliform Rule MON No Yes — — — Resolved Jul 31, 2016 Revised Total Coliform Rule
Jan 1, 2016 Jan 31, 2016 Coliform (TCR) MR No No — 5% of samples — Resolved Jan 31, 2016 Total Coliform Rule
Jun 1, 2015 Jun 30, 2015 Coliform (TCR) MR No No — 5% of samples — Resolved Jun 30, 2015 Total Coliform Rule
May 1, 2015 May 31, 2015 Coliform (TCR) MR No No — 5% of samples — Resolved May 31, 2015 Total Coliform Rule
Mar 1, 2015 Mar 31, 2015 Coliform (TCR) MR No No — 5% of samples — Resolved Mar 31, 2015 Total Coliform Rule
Jan 1, 2015 Dec 31, 2015 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2015 Nitrate Rule
Oct 1, 2014 Oct 31, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Oct 31, 2014 Total Coliform Rule
Sep 1, 2014 Sep 30, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 2014 Total Coliform Rule
Aug 1, 2014 Aug 31, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Aug 31, 2014 Total Coliform Rule
Jul 2, 2014 — Consumer Confidence Rule Other No No — — — Resolved Nov 6, 2014 Consumer Confidence Rule
Jul 1, 2014 — Consumer Confidence Rule Other No No — — — Resolved Sep 4, 2014 Consumer Confidence Rule
Jul 1, 2014 Jul 31, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Jul 31, 2014 Total Coliform Rule
Jun 1, 2014 — Groundwater Rule TT Yes No — — — Resolved Jul 26, 2018 Ground Water Rule
Jun 1, 2014 — Groundwater Rule TT Yes No — — — Resolved Aug 14, 2017 Ground Water Rule
Jun 1, 2014 — Groundwater Rule TT Yes No — — — Resolved Aug 14, 2017 Ground Water Rule
Jun 1, 2014 — Groundwater Rule TT Yes No — — — Resolved Mar 8, 2021 Ground Water Rule
Jun 1, 2014 Jun 30, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Jun 30, 2014 Total Coliform Rule
Jun 1, 2014 — Groundwater Rule TT Yes No — — — Resolved Jul 26, 2018 Ground Water Rule
Apr 1, 2014 Apr 30, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Apr 30, 2014 Total Coliform Rule
Mar 1, 2014 Mar 31, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Mar 31, 2014 Total Coliform Rule
Jan 1, 2014 Dec 31, 2016 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 2016 Volatile Organic Chemicals
Jan 1, 2014 Dec 31, 2016 Toluene MR No Yes — 1 mg/L — Resolved Dec 31, 2016 Volatile Organic Chemicals
Jan 1, 2014 Dec 31, 2016 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2016 Volatile Organic Chemicals
Jan 1, 2014 Dec 31, 2016 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2016 Volatile Organic Chemicals
Jan 1, 2014 Dec 31, 2016 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2016 Volatile Organic Chemicals
Jan 1, 2014 Dec 31, 2016 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Dec 31, 2016 Volatile Organic Chemicals
Jan 1, 2014 Dec 31, 2016 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2016 Volatile Organic Chemicals
Jan 1, 2014 Dec 31, 2016 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2016 Volatile Organic Chemicals
Jan 1, 2014 Dec 31, 2016 Xylenes, Total MR No Yes — 10 mg/L — Resolved Dec 31, 2016 Volatile Organic Chemicals
Jan 1, 2014 Dec 31, 2016 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Dec 31, 2016 Volatile Organic Chemicals
Jan 1, 2014 Dec 31, 2014 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2014 Nitrate Rule
Jan 1, 2014 Dec 31, 2016 Tetrachloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2016 Volatile Organic Chemicals

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.

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