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WEST MESA DOMESTIC WATER ASSN

Washington — Community Water System — PWSID: WA5394830

System Information

PWSIDWA5394830
System NameWEST MESA DOMESTIC WATER ASSN
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypePrivate
EPA Region10
Serves SchoolNo
WholesalerYes
First ReportedFeb 7, 1981
Last ReportedDec 11, 2025

Location & Contact

StateWashington
CityOthello
ZIP Code99344
Address111 Pump Access Rd
OrganizationWEST MESA DOMESTIC WATER ASSN
Phone—

Population & Service

Population Served316
Service Connections114

Drinking Water Violations (236)

This water system has 236 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
Feb 1, 2025 Feb 28, 2025 Revised Total Coliform Rule MON No Yes — — — Resolved Feb 28, 2025 Revised Total Coliform Rule
Jan 1, 2024 Dec 31, 2024 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2024 Nitrate Rule
Jan 1, 2024 Dec 31, 2024 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2024 Nitrate Rule
Jan 1, 2022 Dec 31, 2022 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2022 Nitrate Rule
Jan 1, 2021 Dec 31, 2021 Fluoride MR No Yes — 4.0 mg/L — Resolved Dec 31, 2021 Inorganic Chemicals
Jan 1, 2021 Dec 31, 2021 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2021 Nitrate Rule
Jan 1, 2018 Dec 31, 2018 Fluoride MR No Yes — 4.0 mg/L — Resolved Dec 31, 2018 Inorganic Chemicals
Jan 1, 2018 Dec 31, 2018 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2018 Nitrate Rule
Jul 1, 2015 — Consumer Confidence Rule Other No No — — — Resolved Nov 30, 2015 Consumer Confidence Rule
Feb 1, 2015 Feb 28, 2015 Coliform (TCR) MR No No — 5% of samples — Resolved Feb 28, 2015 Total Coliform Rule
Aug 1, 2014 Aug 31, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Aug 31, 2014 Total Coliform Rule
Jan 1, 2014 Dec 31, 2014 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2014 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2014 Dec 31, 2019 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2014 Dec 31, 2014 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2014 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2014 Dec 31, 2019 Styrene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2014 Dec 31, 2019 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2014 — Lead and Copper Rule MR No No — TT — Resolved Aug 10, 2017 Lead and Copper Rule
Jan 1, 2014 Dec 31, 2019 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2014 Dec 31, 2019 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2014 Dec 31, 2019 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2014 Dec 31, 2019 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2014 Dec 31, 2019 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2014 Dec 31, 2019 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2014 Dec 31, 2019 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2014 Dec 31, 2019 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2014 Dec 31, 2019 CHLOROBENZENE MR No Yes — 0.1 mg/L — Resolved Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2014 Dec 31, 2019 Benzene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2014 Dec 31, 2019 Toluene MR No Yes — 1 mg/L — Resolved Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2014 Dec 31, 2019 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2014 Dec 31, 2019 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2014 Dec 31, 2019 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2014 Dec 31, 2019 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2014 Dec 31, 2019 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2019 Volatile Organic Chemicals
Jan 1, 2014 Dec 31, 2019 Tetrachloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2019 Volatile Organic Chemicals
Dec 1, 2013 Dec 31, 2013 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2013 Total Coliform Rule
Jul 1, 2012 — Consumer Confidence Rule Other No No — — — Resolved Aug 30, 2012 Consumer Confidence Rule
Jan 1, 2011 Dec 31, 2019 Chromium MR No Yes — 0.1 mg/L — Resolved Dec 31, 2019 Inorganic Chemicals
Jan 1, 2011 Dec 31, 2019 Mercury MR No Yes — 0.002 mg/L — Resolved Dec 31, 2019 Inorganic Chemicals
Jan 1, 2011 Dec 31, 2019 Thallium, Total MR No Yes — 0.002 mg/L — Resolved Dec 31, 2019 Inorganic Chemicals
Jan 1, 2011 Dec 31, 2019 Cadmium MR No Yes — 0.005 mg/L — Resolved Dec 31, 2019 Inorganic Chemicals
Jan 1, 2011 Dec 31, 2019 Nitrite MR No Yes — 1 mg/L — Resolved Dec 31, 2019 Nitrate Rule
Jan 1, 2011 Dec 31, 2019 Barium MR No Yes — 2 mg/L — Resolved Dec 31, 2019 Inorganic Chemicals
Jan 1, 2011 Dec 31, 2019 Fluoride MR No Yes — 4.0 mg/L — Resolved Dec 31, 2019 Inorganic Chemicals
Jan 1, 2011 Dec 31, 2019 CYANIDE MR No Yes — 0.2 mg/L — Resolved Dec 31, 2019 Inorganic Chemicals
Jan 1, 2011 Dec 31, 2019 Nickel MR No Yes — — — Resolved Dec 31, 2019 Inorganic Chemicals
Jan 1, 2011 Dec 31, 2019 Beryllium, Total MR No Yes — 0.004 mg/L — Resolved Dec 31, 2019 Inorganic Chemicals
Jan 1, 2011 Dec 31, 2011 Fluoride MR No Yes — 4.0 mg/L — Resolved Dec 31, 2011 Inorganic Chemicals
Jan 1, 2011 Dec 31, 2019 Antimony, Total MR No Yes — 0.006 mg/L — Resolved Dec 31, 2019 Inorganic Chemicals
Jan 1, 2011 Dec 31, 2019 Arsenic MR No Yes — 0.010 mg/L — Resolved Dec 31, 2019 Arsenic Rule
Jan 1, 2011 Dec 31, 2019 Selenium MR No Yes — 0.05 mg/L — Resolved Dec 31, 2019 Inorganic 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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