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PATEROS WATER DEPARTMENT

Washington — Community Water System — PWSID: WA5366450

System Information

PWSIDWA5366450
System NamePATEROS WATER DEPARTMENT
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region10
Serves SchoolNo
WholesalerNo
First ReportedFeb 7, 1981
Last ReportedDec 11, 2025

Location & Contact

StateWashington
CityPateros
ZIP Code98846
Address113 Lakeshore Drive, PO Box 8
OrganizationPATEROS WATER DEPARTMENT
Phone—

Population & Service

Population Served1,149
Service Connections344

Drinking Water Violations (89)

This water system has 89 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
Oct 1, 2024 Dec 31, 2024 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2024 Nitrate Rule
Jan 1, 2021 Dec 31, 2021 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2021 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2021 Dec 31, 2021 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2021 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2019 Mar 31, 2019 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Mar 31, 2019 Volatile Organic Chemicals
Jan 1, 2019 Mar 31, 2019 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Mar 31, 2019 Volatile Organic Chemicals
Jan 1, 2019 Mar 31, 2019 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Mar 31, 2019 Volatile Organic Chemicals
Jan 1, 2019 Mar 31, 2019 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Mar 31, 2019 Volatile Organic Chemicals
Jan 1, 2019 Mar 31, 2019 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Mar 31, 2019 Volatile Organic Chemicals
Jan 1, 2019 Mar 31, 2019 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Mar 31, 2019 Volatile Organic Chemicals
Jan 1, 2019 Mar 31, 2019 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Mar 31, 2019 Volatile Organic Chemicals
Jan 1, 2019 Mar 31, 2019 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Resolved Mar 31, 2019 Volatile Organic Chemicals
Jan 1, 2019 Mar 31, 2019 Tetrachloroethylene MR No Yes — 0.005 mg/L — Resolved Mar 31, 2019 Volatile Organic Chemicals
Jan 1, 2019 Mar 31, 2019 CHLOROBENZENE MR No Yes — 0.1 mg/L — Resolved Mar 31, 2019 Volatile Organic Chemicals
Jan 1, 2019 Mar 31, 2019 Benzene MR No Yes — 0.005 mg/L — Resolved Mar 31, 2019 Volatile Organic Chemicals
Jan 1, 2019 Mar 31, 2019 Toluene MR No Yes — 1 mg/L — Resolved Mar 31, 2019 Volatile Organic Chemicals
Jan 1, 2019 Mar 31, 2019 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Mar 31, 2019 Volatile Organic Chemicals
Jan 1, 2019 Mar 31, 2019 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Mar 31, 2019 Volatile Organic Chemicals
Jan 1, 2019 Mar 31, 2019 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Mar 31, 2019 Volatile Organic Chemicals
Jan 1, 2019 Mar 31, 2019 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Mar 31, 2019 Volatile Organic Chemicals
Jan 1, 2019 Mar 31, 2019 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Mar 31, 2019 Volatile Organic Chemicals
Jan 1, 2019 Mar 31, 2019 Styrene MR No Yes — 0.1 mg/L — Resolved Mar 31, 2019 Volatile Organic Chemicals
Jan 1, 2019 Mar 31, 2019 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Mar 31, 2019 Volatile Organic Chemicals
Jan 1, 2019 Mar 31, 2019 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Mar 31, 2019 Volatile Organic Chemicals
Oct 1, 2018 Dec 31, 2018 Toluene MR No Yes — 1 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Oct 1, 2018 Dec 31, 2018 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Oct 1, 2018 Dec 31, 2018 Tetrachloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Oct 1, 2018 Dec 31, 2018 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Oct 1, 2018 Dec 31, 2018 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Oct 1, 2018 Dec 31, 2018 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Oct 1, 2018 Dec 31, 2018 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Oct 1, 2018 Dec 31, 2018 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Oct 1, 2018 Dec 31, 2018 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Oct 1, 2018 Dec 31, 2018 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Oct 1, 2018 Dec 31, 2018 Styrene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Oct 1, 2018 Dec 31, 2018 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Oct 1, 2018 Dec 31, 2018 Benzene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Oct 1, 2018 Dec 31, 2018 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Oct 1, 2018 Dec 31, 2018 CHLOROBENZENE MR No Yes — 0.1 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Oct 1, 2018 Dec 31, 2018 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Oct 1, 2018 Dec 31, 2018 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Oct 1, 2018 Dec 31, 2018 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Oct 1, 2018 Dec 31, 2018 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Oct 1, 2018 Dec 31, 2018 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Dec 1, 2016 Dec 31, 2016 Revised Total Coliform Rule MON No Yes — — — Resolved Dec 31, 2016 Revised Total Coliform Rule
Jul 1, 2016 — Consumer Confidence Rule Other No No — — — Resolved Oct 21, 2016 Consumer Confidence Rule
Jul 1, 2014 — Consumer Confidence Rule Other No No — — — Resolved Oct 23, 2014 Consumer Confidence Rule
Jul 1, 2013 — Consumer Confidence Rule Other No No — — — Resolved Oct 16, 2013 Consumer Confidence Rule
Jan 1, 2008 Dec 31, 2010 Arsenic MR No Yes — 0.010 mg/L — Resolved Dec 31, 2010 Arsenic Rule
Jan 1, 2008 Dec 31, 2010 Cadmium MR No Yes — 0.005 mg/L — Resolved Dec 31, 2010 Inorganic Chemicals
Jan 1, 2008 Dec 31, 2010 Thallium, Total MR No Yes — 0.002 mg/L — Resolved Dec 31, 2010 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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