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NAPASKIAK WEST WATER SYSTEM

Alaska — Community Water System — PWSID: AK2260139

System Information

PWSIDAK2260139
System NameNAPASKIAK WEST 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
CityNAPASKIAK
ZIP Code99559
AddressP.O. Box 6109
OrganizationLARSON, WASSILENE
Phone907-737-7643

Population & Service

Population Served200
Service Connections1

Drinking Water Violations (675)

This water system has 675 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 Aug 31, 2025 Revised Total Coliform Rule MON No Yes — — — Resolved Aug 31, 2025 Revised Total Coliform Rule
Aug 1, 2025 Aug 31, 2025 Chlorine MR No Yes — 4.0 mg/L — Resolved Aug 31, 2025 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2025 Jul 31, 2025 Chlorine MR No Yes — 4.0 mg/L — Resolved Jul 31, 2025 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2025 Jul 31, 2025 Revised Total Coliform Rule MON No Yes — — — Resolved Jul 31, 2025 Revised Total Coliform Rule
May 1, 2025 May 31, 2025 Chlorine MR No Yes — 4.0 mg/L — Resolved May 31, 2025 Stage 1 Disinfectants and Disinfection Byproducts Rule
May 1, 2025 May 31, 2025 Revised Total Coliform Rule MON No Yes — — — Resolved May 31, 2025 Revised Total Coliform Rule
Apr 1, 2025 Apr 30, 2025 Revised Total Coliform Rule MON No Yes — — — Resolved Apr 30, 2025 Revised Total Coliform Rule
Apr 1, 2025 Apr 30, 2025 Chlorine MR No Yes — 4.0 mg/L — Resolved Apr 30, 2025 Stage 1 Disinfectants and Disinfection Byproducts Rule
Mar 1, 2025 Mar 31, 2025 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2025 Stage 1 Disinfectants and Disinfection Byproducts Rule
Mar 1, 2025 Mar 31, 2025 Revised Total Coliform Rule MON No Yes — — — Resolved Mar 31, 2025 Revised Total Coliform Rule
Feb 1, 2025 Feb 28, 2025 Chlorine MR No Yes — 4.0 mg/L — Resolved Feb 28, 2025 Stage 1 Disinfectants and Disinfection Byproducts Rule
Feb 1, 2025 Feb 28, 2025 Revised Total Coliform Rule MON No Yes — — — Resolved Feb 28, 2025 Revised Total Coliform Rule
Dec 1, 2024 Dec 31, 2024 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2024 Stage 1 Disinfectants and Disinfection Byproducts Rule
Dec 1, 2024 Dec 31, 2024 Revised Total Coliform Rule MON No Yes — — — Resolved Dec 31, 2024 Revised Total Coliform Rule
Nov 1, 2024 Nov 30, 2024 Revised Total Coliform Rule MON No Yes — — — Resolved Nov 30, 2024 Revised Total Coliform Rule
Nov 1, 2024 Nov 30, 2024 Chlorine MR No Yes — 4.0 mg/L — Resolved Nov 30, 2024 Stage 1 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2024 Aug 31, 2024 Chlorine MR No Yes — 4.0 mg/L — Resolved Aug 31, 2024 Stage 1 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2024 Aug 31, 2024 Revised Total Coliform Rule MON No Yes — — — Resolved Aug 31, 2024 Revised Total Coliform Rule
May 1, 2024 May 31, 2024 Revised Total Coliform Rule MON No Yes — — — Resolved May 31, 2024 Revised Total Coliform Rule
Apr 14, 2024 — Groundwater Rule TT Yes No — — — Unaddressed — Ground Water Rule
Apr 14, 2024 — Groundwater Rule TT Yes No — — — Resolved Jun 26, 2025 Ground Water Rule
Apr 14, 2024 — Groundwater Rule TT Yes No — — — Unaddressed — Ground Water Rule
Apr 14, 2024 — Groundwater Rule TT Yes No — — — Unaddressed — Ground Water Rule
Apr 14, 2024 — Groundwater Rule TT Yes No — — — Unaddressed — Ground Water Rule
Apr 1, 2024 Apr 30, 2024 Revised Total Coliform Rule MON No Yes — — — Resolved Apr 30, 2024 Revised Total Coliform Rule
Apr 1, 2024 Apr 30, 2024 Chlorine MR No Yes — 4.0 mg/L — Resolved Apr 30, 2024 Stage 1 Disinfectants and Disinfection Byproducts Rule
Mar 1, 2024 Mar 31, 2024 Revised Total Coliform Rule MON No Yes — — — Resolved Mar 31, 2024 Revised Total Coliform Rule
Jan 15, 2024 — Groundwater Rule Other No No — — — Resolved Jun 26, 2025 Ground Water Rule
Jan 1, 2024 — Lead and Copper Rule MR No No — TT — Unaddressed — Lead and Copper Rule
Jan 1, 2024 Jan 31, 2024 Revised Total Coliform Rule MON No Yes — — — Resolved Jan 31, 2024 Revised Total Coliform Rule
Jan 1, 2024 Mar 31, 2024 Chlorine MR No Yes — 4.0 mg/L — Resolved Feb 6, 2024 Stage 1 Disinfectants and Disinfection Byproducts Rule
Nov 1, 2023 Nov 30, 2023 Revised Total Coliform Rule MON No Yes — — — Resolved Nov 30, 2023 Revised Total Coliform Rule
Oct 1, 2023 Dec 31, 2023 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 27, 2023 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2023 — Consumer Confidence Rule Other No No — — — Resolved Nov 21, 2023 Consumer Confidence Rule
Oct 1, 2023 Oct 31, 2023 Revised Total Coliform Rule MON No Yes — — — Resolved Oct 31, 2023 Revised Total Coliform Rule
Sep 1, 2023 Sep 30, 2023 Revised Total Coliform Rule MON No Yes — — — Resolved Sep 30, 2023 Revised Total Coliform Rule
Jul 1, 2023 Sep 30, 2023 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2023 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2023 — Consumer Confidence Rule Other No No — — — Resolved Oct 21, 2023 Consumer Confidence Rule
Jun 2, 2023 — Public Notice Other No No — — — Resolved Feb 13, 2024 Public Notice Rule and Revised PN Rule
Jun 1, 2023 Jun 30, 2023 Revised Total Coliform Rule MON No Yes — — — Resolved Jun 30, 2023 Revised Total Coliform Rule
Apr 1, 2023 Jun 30, 2023 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2023 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2023 Apr 30, 2023 Revised Total Coliform Rule MON No Yes — — — Resolved Apr 30, 2023 Revised Total Coliform Rule
Mar 1, 2023 Mar 31, 2023 Revised Total Coliform Rule MON No Yes — — — Resolved Mar 31, 2023 Revised Total Coliform Rule
Jan 1, 2023 Mar 31, 2023 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2023 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Dec 31, 2023 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2023 Nitrate Rule
Dec 1, 2022 Dec 31, 2022 Revised Total Coliform Rule MON No Yes — — — Resolved Dec 31, 2022 Revised Total Coliform Rule
Nov 1, 2022 Nov 30, 2022 Revised Total Coliform Rule MON No Yes — — — Resolved Nov 30, 2022 Revised Total Coliform Rule
Oct 1, 2022 Dec 31, 2022 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2022 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2022 — Consumer Confidence Rule Other No No — — — Resolved Sep 29, 2022 Consumer Confidence Rule
Jun 1, 2022 Jun 30, 2022 Revised Total Coliform Rule MON No Yes — — — Resolved Jun 30, 2022 Revised Total Coliform Rule

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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