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MISTEQUA CASINO

Washington — Non-Transient Non-Community — PWSID: 105300134

System Information

PWSID105300134
System NameMISTEQUA CASINO
System TypeNon-Transient Non-Community
Water SourceGround Water
Activity StatusActive
Owner TypeNative American
EPA Region10
Serves SchoolNo
WholesalerNo
First ReportedJan 27, 2006
Last ReportedDec 30, 2025

Location & Contact

StateWashington
CityWELLPINIT
ZIP Code99040
AddressP. O. BOX 100
OrganizationCHAN, LAM
Phone509-458-6588

Population & Service

Population Served2,070
Service Connections6

Drinking Water Violations (470)

This water system has 470 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
Dec 13, 2024 — Public Notice Other No No — — — Resolved Sep 2, 2025 Public Notice Rule and Revised PN Rule
Oct 17, 2024 — LEAD AND COPPER RULE REVISIONS RPT No No — — — Resolved Nov 20, 2024 Lead and Copper Rule Revisions
Oct 17, 2024 — LEAD AND COPPER RULE REVISIONS TT Yes No — — — Resolved Dec 3, 2024 Lead and Copper Rule Revisions
Jun 1, 2022 Jun 30, 2022 Revised Total Coliform Rule MON No Yes — — — Resolved Jun 30, 2022 Revised Total Coliform Rule
Mar 1, 2022 — Revised Total Coliform Rule RPT No No — — — Resolved Apr 13, 2022 Revised Total Coliform Rule
Sep 1, 2020 Sep 30, 2020 Revised Total Coliform Rule MON No Yes — — — Resolved Sep 30, 2020 Revised Total Coliform Rule
Jun 1, 2019 Jun 30, 2019 Revised Total Coliform Rule MON No Yes — — — Resolved Jun 30, 2019 Revised Total Coliform Rule
Jan 1, 2019 Dec 31, 2019 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2019 Nitrate Rule
Dec 16, 2018 — Groundwater Rule TT Yes No — — — Resolved Jul 11, 2023 Ground Water Rule
Dec 16, 2018 — Groundwater Rule TT Yes No — — — Resolved Jul 11, 2023 Ground Water Rule
Dec 16, 2018 — Groundwater Rule TT Yes No — — — Resolved Aug 19, 2020 Ground Water Rule
Dec 16, 2018 — Groundwater Rule TT Yes No — — — Resolved Aug 19, 2020 Ground Water Rule
Aug 1, 2018 Aug 31, 2018 Revised Total Coliform Rule MON No Yes — — — Resolved Aug 31, 2018 Revised Total Coliform Rule
Feb 1, 2018 Feb 28, 2018 Revised Total Coliform Rule MON No Yes — — — Resolved Feb 28, 2018 Revised Total Coliform Rule
Jan 1, 2018 — Lead and Copper Rule MR No No — TT — Resolved Jun 1, 2018 Lead and Copper Rule
Oct 1, 2017 — Lead and Copper Rule MR No No — TT — Resolved Sep 4, 2018 Lead and Copper Rule
Jan 1, 2017 Dec 31, 2019 Arsenic MR No Yes — 0.010 mg/L — Resolved Dec 31, 2019 Arsenic Rule
Dec 13, 2016 — Revised Total Coliform Rule RPT No No — — — Resolved Dec 27, 2016 Revised Total Coliform Rule
Nov 1, 2016 Nov 30, 2016 Revised Total Coliform Rule MON No Yes — — — Resolved Nov 30, 2016 Revised Total Coliform Rule
Oct 11, 2016 — Revised Total Coliform Rule RPT No No — — — Resolved Oct 21, 2016 Revised Total Coliform Rule
Sep 1, 2016 Sep 30, 2016 Revised Total Coliform Rule MON No Yes — — — Resolved Sep 30, 2016 Revised Total Coliform Rule
Sep 1, 2016 Sep 30, 2016 Revised Total Coliform Rule MON No Yes — — — Resolved Sep 30, 2016 Revised Total Coliform Rule
Jul 1, 2016 Jul 31, 2016 Revised Total Coliform Rule MON No Yes — — — Resolved Jul 31, 2016 Revised Total Coliform Rule
Jun 1, 2016 Jun 30, 2016 Revised Total Coliform Rule MON No Yes — — — Resolved Jun 30, 2016 Revised Total Coliform Rule
Jan 1, 2016 Dec 31, 2016 Nitrate MR No Yes — 10 mg/L — Resolved Jul 28, 2016 Nitrate Rule
Dec 1, 2015 Dec 31, 2015 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2015 Total Coliform Rule
Sep 1, 2015 Sep 30, 2015 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 2015 Total Coliform 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 Jun 30, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Jun 30, 2014 Total Coliform Rule
Jun 1, 2014 Jun 30, 2014 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jun 30, 2014 Total Coliform Rule
Apr 1, 2014 Apr 30, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Apr 30, 2014 Total Coliform Rule
Feb 1, 2014 Feb 28, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Feb 28, 2014 Total Coliform Rule
Jan 1, 2014 Dec 31, 2016 Arsenic MR No Yes — 0.010 mg/L — Resolved Dec 31, 2016 Arsenic Rule
Jan 1, 2014 Dec 31, 2014 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2014 Nitrate Rule
Oct 1, 2013 Oct 31, 2013 Coliform (TCR) MR No No — 5% of samples — Resolved Oct 31, 2013 Total Coliform Rule
Jan 1, 2013 Jan 31, 2013 Coliform (TCR) MR No No — 5% of samples — Resolved Jan 31, 2013 Total Coliform Rule
Dec 1, 2012 Dec 31, 2012 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Dec 31, 2012 Total Coliform Rule
Jan 1, 2012 Dec 31, 2012 Styrene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Jan 1, 2012 Dec 31, 2012 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Jan 1, 2012 Dec 31, 2012 Toluene MR No Yes — 1 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Jan 1, 2012 Dec 31, 2012 Xylenes, Total MR No Yes — 10 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Jan 1, 2012 Dec 31, 2012 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Jan 1, 2012 Dec 31, 2012 Tetrachloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Jan 1, 2012 Dec 31, 2012 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Jan 1, 2012 Dec 31, 2012 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Jan 1, 2012 Dec 31, 2012 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Jan 1, 2012 Dec 31, 2012 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Jan 1, 2012 Dec 31, 2012 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Jan 1, 2012 Dec 31, 2012 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Jan 1, 2012 Dec 31, 2012 CHLOROBENZENE MR No Yes — 0.1 mg/L — Resolved Dec 31, 2012 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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