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MCNEIL ISLAND WATER

Washington — Community Water System — PWSID: WA5352900

System Information

PWSIDWA5352900
System NameMCNEIL ISLAND WATER
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeState
EPA Region10
Serves SchoolNo
WholesalerNo
First ReportedFeb 7, 1981
Last ReportedDec 11, 2025

Location & Contact

StateWashington
CityTumwater
ZIP Code98501
AddressPO Box 41112
OrganizationMCNEIL ISLAND WATER
Phone—

Population & Service

Population Served692
Service Connections271

Drinking Water Violations (69)

This water system has 69 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
Nov 1, 2022 — Surface Water Treatment Rule TT Yes No — — — Resolved Dec 28, 2022 Surface Water Treatment Rule
Nov 1, 2022 — Surface Water Treatment Rule TT Yes No — — — Resolved Dec 28, 2022 Surface Water Treatment Rule
Nov 1, 2022 — Surface Water Treatment Rule TT Yes No — — — Resolved Dec 28, 2022 Surface Water Treatment Rule
Oct 1, 2022 — Surface Water Treatment Rule TT Yes No — — — Resolved Dec 28, 2022 Surface Water Treatment Rule
Oct 1, 2022 — Surface Water Treatment Rule TT Yes No — — — Resolved Dec 28, 2022 Surface Water Treatment Rule
Oct 1, 2022 — Surface Water Treatment Rule TT Yes No — — — Resolved Dec 28, 2022 Surface Water Treatment Rule
Sep 1, 2022 — Surface Water Treatment Rule TT Yes No — — — Resolved Dec 28, 2022 Surface Water Treatment Rule
Sep 1, 2022 — Surface Water Treatment Rule TT Yes No — — — Resolved Dec 28, 2022 Surface Water Treatment Rule
Sep 1, 2022 — Surface Water Treatment Rule TT Yes No — — — Resolved Dec 28, 2022 Surface Water Treatment Rule
Aug 1, 2022 — Surface Water Treatment Rule TT Yes No — — — Resolved Dec 28, 2022 Surface Water Treatment Rule
Aug 1, 2022 — Surface Water Treatment Rule TT Yes No — — — Resolved Dec 28, 2022 Surface Water Treatment Rule
Aug 1, 2022 — Surface Water Treatment Rule TT Yes No — — — Resolved Dec 28, 2022 Surface Water Treatment Rule
Jul 1, 2022 — Surface Water Treatment Rule TT Yes No — — — Resolved Dec 28, 2022 Surface Water Treatment Rule
Jul 1, 2022 — Surface Water Treatment Rule TT Yes No — — — Resolved Dec 28, 2022 Surface Water Treatment Rule
Jul 1, 2022 — Surface Water Treatment Rule TT Yes No — — — Resolved Dec 28, 2022 Surface Water Treatment Rule
Feb 1, 2021 — Surface Water Treatment Rule TT Yes No — — — Resolved Apr 21, 2021 Surface Water Treatment Rule
Feb 1, 2021 — Surface Water Treatment Rule TT Yes No — — — Resolved Apr 21, 2021 Surface Water Treatment Rule
Feb 1, 2021 — Surface Water Treatment Rule TT Yes No — — — Resolved Apr 21, 2021 Surface Water Treatment Rule
Jan 1, 2021 — Surface Water Treatment Rule TT Yes No — — — Addressed — Surface Water Treatment Rule
Dec 1, 2020 — Surface Water Treatment Rule TT Yes No — — — Addressed — Surface Water Treatment Rule
Nov 1, 2020 — Surface Water Treatment Rule TT Yes No — — — Addressed — Surface Water Treatment Rule
Oct 1, 2020 — Surface Water Treatment Rule TT Yes No — — — Addressed — Surface Water Treatment Rule
Sep 1, 2020 — Surface Water Treatment Rule TT Yes No — — — Addressed — Surface Water Treatment Rule
Aug 1, 2020 — Surface Water Treatment Rule TT Yes No — — — Resolved Oct 5, 2020 Surface Water Treatment Rule
Aug 1, 2020 — Surface Water Treatment Rule TT Yes No — — — Resolved Oct 5, 2020 Surface Water Treatment Rule
Aug 1, 2020 — Surface Water Treatment Rule TT Yes No — — — Resolved Oct 5, 2020 Surface Water Treatment Rule
Jul 1, 2020 — Surface Water Treatment Rule TT Yes No — — — Resolved Oct 5, 2020 Surface Water Treatment Rule
Jul 1, 2020 — Surface Water Treatment Rule TT Yes No — — — Resolved Oct 5, 2020 Surface Water Treatment Rule
Jul 1, 2020 — Surface Water Treatment Rule TT Yes No — — — Resolved Oct 5, 2020 Surface Water Treatment Rule
Jun 1, 2020 — Surface Water Treatment Rule TT Yes No — — — Resolved Oct 5, 2020 Surface Water Treatment Rule
Jun 1, 2020 — Surface Water Treatment Rule TT Yes No — — — Resolved Oct 5, 2020 Surface Water Treatment Rule
Jun 1, 2020 — Surface Water Treatment Rule TT Yes No — — — Resolved Oct 5, 2020 Surface Water Treatment Rule
Jan 1, 2019 Mar 31, 2019 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Mar 31, 2019 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2019 Mar 31, 2019 TTHM MR No Yes — 0.080 mg/L — Resolved Mar 31, 2019 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2018 Dec 31, 2018 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2018 Nitrate Rule
Jul 1, 2017 Sep 30, 2017 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2017 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2017 Sep 30, 2017 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2017 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2012 — Consumer Confidence Rule Other No No — — — Resolved Apr 4, 2013 Consumer Confidence Rule
Jan 1, 2010 Dec 31, 2010 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2010 Dec 31, 2010 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2010 Dec 31, 2010 Toluene MR No Yes — 1 mg/L — Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2010 Dec 31, 2010 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2010 Dec 31, 2010 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2010 Dec 31, 2010 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2010 Dec 31, 2010 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2010 Dec 31, 2010 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2010 Dec 31, 2010 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2010 Dec 31, 2010 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2010 Dec 31, 2010 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2010 Dec 31, 2010 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2010 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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