Columbia Generating Station

Washington — Non-Transient Non-Community — PWSID: WA5392024

System Information

PWSIDWA5392024
System NameColumbia Generating Station
System TypeNon-Transient Non-Community
Water SourceSurface Water
Activity StatusActive
Owner TypeLocal
EPA Region10
Serves SchoolNo
WholesalerYes
First ReportedFeb 7, 1981
Last ReportedDec 11, 2025

Location & Contact

StateWashington
CityRichland
ZIP Code99352
AddressPO Box 968
OrganizationColumbia Generating Station
Phone

Population & Service

Population Served1,632
Service Connections32

Drinking Water Violations (59)

This water system has 59 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
Sep 1, 2024 Surface Water Treatment Rule TT Yes No Unaddressed Surface Water Treatment Rule
Dec 1, 2022 Surface Water Treatment Rule TT Yes No Unaddressed Surface Water Treatment Rule
Nov 1, 2022 Surface Water Treatment Rule TT Yes No Unaddressed Surface Water Treatment Rule
Oct 1, 2016 Dec 31, 2016 TTHM MR No Yes 0.080 mg/L Resolved Dec 31, 2016 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2016 Dec 31, 2016 Total Haloacetic Acids (HAA5) MR No Yes 0.060 mg/L Resolved Dec 31, 2016 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 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
Oct 1, 2014 Dec 31, 2014 TTHM MR No Yes 0.080 mg/L Resolved Dec 31, 2014 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2014 Sep 30, 2014 Total Haloacetic Acids (HAA5) MR No Yes 0.060 mg/L Resolved Sep 30, 2014 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2014 Sep 30, 2014 TTHM MR No Yes 0.080 mg/L Resolved Sep 30, 2014 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2014 Jun 30, 2014 TTHM MR No Yes 0.080 mg/L Resolved Jun 30, 2014 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2014 Jun 30, 2014 Total Haloacetic Acids (HAA5) MR No Yes 0.060 mg/L Resolved Jun 30, 2014 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2011 Dec 31, 2019 Asbestos MR No Yes 7 MFL Archived Dec 31, 2019 Inorganic Chemicals
Jan 1, 2007 Dec 31, 2007 Tetrachloroethylene MR No Yes 0.005 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 1,2,4-Trichlorobenzene MR No Yes 0.07 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 o-Dichlorobenzene MR No Yes 0.6 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 o-Dichlorobenzene MR No Yes 0.6 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 p-Dichlorobenzene MR No Yes 0.075 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 p-Dichlorobenzene MR No Yes 0.075 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 DICHLOROMETHANE MR No Yes 0.005 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 DICHLOROMETHANE MR No Yes 0.005 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 Ethylbenzene MR No Yes 0.7 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 1,2-Dichloropropane MR No Yes 0.005 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 Tetrachloroethylene MR No Yes 0.005 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 Ethylbenzene MR No Yes 0.7 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 cis-1,2-Dichloroethylene MR No Yes 0.07 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 cis-1,2-Dichloroethylene MR No Yes 0.07 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 1,1,2-Trichloroethane MR No Yes 0.005 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 1,1,2-Trichloroethane MR No Yes 0.005 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 1,2-Dichloropropane MR No Yes 0.005 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 1,1,1-Trichloroethane MR No Yes 0.2 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 1,2,4-Trichlorobenzene MR No Yes 0.07 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 Vinyl chloride MR No Yes 0.002 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 Vinyl chloride MR No Yes 0.002 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 1,1-Dichloroethylene MR No Yes 0.007 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 1,1-Dichloroethylene MR No Yes 0.007 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 trans-1,2-Dichloroethylene MR No Yes 0.1 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 trans-1,2-Dichloroethylene MR No Yes 0.1 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 1,2-Dichloroethane MR No Yes 0.005 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 1,2-Dichloroethane MR No Yes 0.005 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 1,1,1-Trichloroethane MR No Yes 0.2 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 Carbon tetrachloride MR No Yes 0.005 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 Trichloroethylene MR No Yes 0.005 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 Styrene MR No Yes 0.1 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 Styrene MR No Yes 0.1 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 Toluene MR No Yes 1 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 Toluene MR No Yes 1 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 Benzene MR No Yes 0.005 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 Benzene MR No Yes 0.005 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 CHLOROBENZENE MR No Yes 0.1 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 CHLOROBENZENE MR No Yes 0.1 mg/L Resolved Dec 31, 2007 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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