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OKANOGAN WATER DEPARTMENT CITY OF

Washington — Community Water System — PWSID: WA5363200

System Information

PWSIDWA5363200
System NameOKANOGAN WATER DEPARTMENT CITY OF
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region10
Serves SchoolNo
WholesalerYes
First ReportedFeb 7, 1981
Last ReportedDec 11, 2025

Location & Contact

StateWashington
CityOKANOGAN
ZIP Code98840
AddressPO Box 752
OrganizationOKANOGAN WATER DEPARTMENT CITY OF
Phone—

Population & Service

Population Served2,921
Service Connections1,247

Drinking Water Violations (77)

This water system has 77 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
Jan 1, 2018 Dec 31, 2018 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Jan 1, 2018 Dec 31, 2018 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Jan 1, 2018 Dec 31, 2018 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Jan 1, 2018 Dec 31, 2018 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Jan 1, 2018 Dec 31, 2018 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Jan 1, 2018 Dec 31, 2018 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Jan 1, 2018 Dec 31, 2018 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Jan 1, 2018 Dec 31, 2018 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Jan 1, 2018 Dec 31, 2018 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Jan 1, 2018 Dec 31, 2018 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Jan 1, 2018 Dec 31, 2018 Tetrachloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Jan 1, 2018 Dec 31, 2018 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Jan 1, 2018 Dec 31, 2018 Styrene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Jan 1, 2018 Dec 31, 2018 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Jan 1, 2018 Dec 31, 2018 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Jan 1, 2018 Dec 31, 2018 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Jan 1, 2018 Dec 31, 2018 Benzene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Jan 1, 2018 Dec 31, 2018 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Jan 1, 2018 Dec 31, 2018 Toluene MR No Yes — 1 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Jan 1, 2018 Dec 31, 2018 CHLOROBENZENE MR No Yes — 0.1 mg/L — Resolved Dec 31, 2018 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 Styrene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 Tetrachloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 CHLOROBENZENE MR No Yes — 0.1 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 Benzene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 Toluene MR No Yes — 1 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2013 Dec 31, 2013 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2013 Nitrate Rule
Nov 1, 2006 Nov 30, 2006 Coliform (TCR) MCL Yes No — 5% of samples — Archived Nov 30, 2006 Total Coliform Rule
Aug 1, 2006 Aug 31, 2006 Coliform (TCR) MCL Yes No — 5% of samples — Archived Aug 31, 2006 Total Coliform Rule
Nov 1, 2005 Nov 30, 2005 Coliform (TCR) MCL Yes No — 5% of samples — Archived Nov 30, 2005 Total Coliform Rule
Jan 1, 2002 Dec 31, 2004 Toluene MR No Yes — 1 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 CHLOROBENZENE MR No Yes — 0.1 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2004 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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