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DENALI - ROCK CREEK HQ.

Alaska — Community Water System — PWSID: AK2390586

System Information

PWSIDAK2390586
System NameDENALI - ROCK CREEK HQ.
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeFederal
EPA Region10
Serves SchoolNo
WholesalerNo
First ReportedFeb 7, 1981
Last ReportedDec 19, 2025

Location & Contact

StateAlaska
CityDENALI PARK
ZIP Code99755
AddressP.O. Box 9
OrganizationYOUNG, ROBERT
Phone907-683-9569

Population & Service

Population Served300
Service Connections61

Drinking Water Violations (121)

This water system has 121 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
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, 2023 Jun 30, 2023 Styrene MR No Yes — 0.1 mg/L — Resolved Jun 30, 2023 Volatile Organic Chemicals
Apr 1, 2023 Jun 30, 2023 CHLOROBENZENE MR No Yes — 0.1 mg/L — Resolved Jun 30, 2023 Volatile Organic Chemicals
Apr 1, 2023 Jun 30, 2023 Tetrachloroethylene MR No Yes — 0.005 mg/L — Resolved Jun 30, 2023 Volatile Organic Chemicals
Apr 1, 2023 Jun 30, 2023 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Jun 30, 2023 Volatile Organic Chemicals
Apr 1, 2023 Jun 30, 2023 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Jun 30, 2023 Volatile Organic Chemicals
Apr 1, 2023 Jun 30, 2023 Toluene MR No Yes — 1 mg/L — Resolved Jun 30, 2023 Volatile Organic Chemicals
Apr 1, 2023 Jun 30, 2023 Benzene MR No Yes — 0.005 mg/L — Resolved Jun 30, 2023 Volatile Organic Chemicals
Apr 1, 2023 Jun 30, 2023 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Resolved Jun 30, 2023 Volatile Organic Chemicals
Apr 1, 2023 Jun 30, 2023 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Jun 30, 2023 Volatile Organic Chemicals
Apr 1, 2023 Jun 30, 2023 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Jun 30, 2023 Volatile Organic Chemicals
Apr 1, 2023 Jun 30, 2023 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Jun 30, 2023 Volatile Organic Chemicals
Apr 1, 2023 Jun 30, 2023 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Jun 30, 2023 Volatile Organic Chemicals
Apr 1, 2023 Jun 30, 2023 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Jun 30, 2023 Volatile Organic Chemicals
Apr 1, 2023 Jun 30, 2023 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Jun 30, 2023 Volatile Organic Chemicals
Apr 1, 2023 Jun 30, 2023 Xylenes, Total MR No Yes — 10 mg/L — Resolved Jun 30, 2023 Volatile Organic Chemicals
Apr 1, 2023 Jun 30, 2023 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Jun 30, 2023 Volatile Organic Chemicals
Apr 1, 2023 Jun 30, 2023 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Jun 30, 2023 Volatile Organic Chemicals
Apr 1, 2023 Jun 30, 2023 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Jun 30, 2023 Volatile Organic Chemicals
Apr 1, 2023 Jun 30, 2023 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Jun 30, 2023 Volatile Organic Chemicals
Apr 1, 2023 Jun 30, 2023 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Jun 30, 2023 Volatile Organic Chemicals
Apr 1, 2023 Jun 30, 2023 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Jun 30, 2023 Volatile Organic Chemicals
May 1, 2022 May 31, 2022 Revised Total Coliform Rule MON No Yes — — — Resolved May 31, 2022 Revised Total Coliform Rule
Apr 1, 2022 Jun 30, 2022 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 7, 2022 Stage 1 Disinfectants and Disinfection Byproducts Rule
Feb 26, 2022 — Groundwater Rule TT Yes No — — — Resolved Jul 1, 2023 Ground Water Rule
Feb 26, 2022 — Groundwater Rule TT Yes No — — — Resolved Jul 1, 2023 Ground Water Rule
Jul 1, 2021 Sep 30, 2021 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 14, 2021 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2021 Jun 30, 2021 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 28, 2021 Stage 1 Disinfectants and Disinfection Byproducts Rule
Feb 1, 2021 Feb 28, 2021 Revised Total Coliform Rule MON No Yes — — — Resolved Feb 28, 2021 Revised Total Coliform Rule
Jan 1, 2021 Mar 31, 2021 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 24, 2021 Stage 1 Disinfectants and Disinfection Byproducts Rule
Nov 1, 2020 Nov 30, 2020 Revised Total Coliform Rule MON No Yes — — — Resolved Nov 30, 2020 Revised Total Coliform Rule
Oct 1, 2020 Dec 31, 2020 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 18, 2020 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2019 Dec 31, 2019 Chlorine MR No Yes — 4.0 mg/L — Resolved Nov 5, 2019 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2009 — Consumer Confidence Rule Other No No — — — Resolved Jul 15, 2009 Consumer Confidence Rule
Jul 1, 2008 — Consumer Confidence Rule Other No No — — — Resolved Jul 17, 2008 Consumer Confidence Rule
Jul 1, 2007 — Consumer Confidence Rule Other No No — — — Resolved Aug 26, 2007 Consumer Confidence Rule
Nov 1, 2000 Nov 30, 2000 Coliform (TCR) MR No Yes — 5% of samples — Resolved Nov 30, 2000 Total Coliform Rule
Jul 1, 1991 Sep 30, 1991 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Sep 30, 1991 Volatile Organic Chemicals
Jul 1, 1991 Sep 30, 1991 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Sep 30, 1991 Volatile Organic Chemicals
Jul 1, 1991 Sep 30, 1991 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Sep 30, 1991 Volatile Organic Chemicals
Jul 1, 1991 Sep 30, 1991 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Sep 30, 1991 Volatile Organic Chemicals
Jul 1, 1991 Sep 30, 1991 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Sep 30, 1991 Volatile Organic Chemicals
Jul 1, 1991 Sep 30, 1991 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Sep 30, 1991 Volatile Organic Chemicals
Jul 1, 1991 Sep 30, 1991 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Sep 30, 1991 Volatile Organic Chemicals
Jul 1, 1991 Sep 30, 1991 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Sep 30, 1991 Volatile Organic Chemicals
Jul 1, 1991 Sep 30, 1991 Benzene MR No Yes — 0.005 mg/L — Resolved Sep 30, 1991 Volatile Organic Chemicals
Jul 1, 1991 Sep 30, 1991 Benzene MR No Yes — 0.005 mg/L — Resolved Sep 30, 1991 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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