WASCO, CITY OF

Oregon — Community Water System — PWSID: OR4100935

System Information

PWSIDOR4100935
System NameWASCO, CITY OF
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region10
Serves SchoolNo
WholesalerNo
First ReportedMar 12, 1979
Last ReportedDec 23, 2025

Location & Contact

StateOregon
CityWASCO
ZIP Code97065
AddressPO BOX 26
OrganizationWASCO, CITY OF
Phone541-442-5515

Population & Service

Population Served460
Service Connections215

Drinking Water Violations (157)

This water system has 157 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
Jul 1, 2025 Consumer Confidence Rule Other No No Resolved Aug 22, 2025 Consumer Confidence Rule
Jan 1, 2025 Jan 31, 2025 Revised Total Coliform Rule MON No Yes Resolved Jan 31, 2025 Revised Total Coliform Rule
Jan 1, 2025 Jan 31, 2025 Revised Total Coliform Rule MON No Yes Resolved Jan 31, 2025 Revised Total Coliform Rule
Dec 1, 2014 Dec 31, 2014 Coliform (TCR) MCL Yes No 5% of samples Resolved Dec 31, 2014 Total Coliform Rule
Dec 1, 2014 Dec 31, 2014 Coliform (TCR) MCL Yes No 5% of samples Resolved Dec 31, 2014 Total Coliform Rule
Dec 1, 2014 Dec 31, 2014 Coliform (TCR) MCL Yes No 5% of samples Resolved Dec 31, 2014 Total Coliform Rule
Nov 1, 2014 Nov 30, 2014 Coliform (TCR) MCL Yes No 5% of samples Resolved Nov 30, 2014 Total Coliform Rule
Nov 1, 2014 Nov 30, 2014 Coliform (TCR) MCL Yes No 5% of samples Resolved Nov 30, 2014 Total Coliform Rule
Nov 1, 2014 Nov 30, 2014 Coliform (TCR) MCL Yes No 5% of samples Resolved Nov 30, 2014 Total Coliform Rule
Nov 1, 2012 Nov 30, 2012 Coliform (TCR) MCL Yes No 5% of samples Resolved Nov 30, 2012 Total Coliform Rule
Nov 1, 2012 Nov 30, 2012 Coliform (TCR) MCL Yes No 5% of samples Resolved Nov 30, 2012 Total Coliform Rule
Nov 1, 2012 Nov 30, 2012 Coliform (TCR) MCL Yes No 5% of samples Resolved Nov 30, 2012 Total Coliform Rule
Nov 1, 2012 Nov 30, 2012 Coliform (TCR) MCL Yes No 5% of samples Resolved Nov 30, 2012 Total Coliform Rule
Jun 1, 2011 Jun 30, 2011 Coliform (TCR) MCL Yes No 5% of samples Resolved Jun 30, 2011 Total Coliform Rule
Jun 1, 2011 Jun 30, 2011 Coliform (TCR) MCL Yes No 5% of samples Resolved Jun 30, 2011 Total Coliform Rule
Jun 1, 2011 Jun 30, 2011 Coliform (TCR) MCL Yes No 5% of samples Resolved Jun 30, 2011 Total Coliform Rule
Jun 1, 2011 Jun 30, 2011 Coliform (TCR) MCL Yes No 5% of samples Resolved Jun 30, 2011 Total Coliform Rule
Jan 1, 2011 Dec 31, 2013 1,1,2-Trichloroethane MR No Yes 0.005 mg/L Resolved Dec 31, 2013 Volatile Organic Chemicals
Jan 1, 2011 Dec 31, 2011 Di(2-ethylhexyl) phthalate MR No Yes 0.006 mg/L Resolved Dec 31, 2011 Synthetic Organic Chemicals
Jan 1, 2011 Dec 31, 2013 DICHLOROMETHANE MR No Yes 0.005 mg/L Resolved Dec 31, 2013 Volatile Organic Chemicals
Jan 1, 2011 Dec 31, 2013 CHLOROBENZENE MR No Yes 0.1 mg/L Resolved Dec 31, 2013 Volatile Organic Chemicals
Jan 1, 2011 Dec 31, 2013 Vinyl chloride MR No Yes 0.002 mg/L Resolved Dec 31, 2013 Volatile Organic Chemicals
Jan 1, 2011 Dec 31, 2013 Carbon tetrachloride MR No Yes 0.005 mg/L Resolved Dec 31, 2013 Volatile Organic Chemicals
Jan 1, 2011 Dec 31, 2013 Styrene MR No Yes 0.1 mg/L Resolved Dec 31, 2013 Volatile Organic Chemicals
Jan 1, 2011 Dec 31, 2013 Xylenes, Total MR No Yes 10 mg/L Resolved Dec 31, 2013 Volatile Organic Chemicals
Jan 1, 2011 Dec 31, 2013 o-Dichlorobenzene MR No Yes 0.6 mg/L Resolved Dec 31, 2013 Volatile Organic Chemicals
Jan 1, 2011 Dec 31, 2013 trans-1,2-Dichloroethylene MR No Yes 0.1 mg/L Resolved Dec 31, 2013 Volatile Organic Chemicals
Jan 1, 2011 Dec 31, 2013 Benzene MR No Yes 0.005 mg/L Resolved Dec 31, 2013 Volatile Organic Chemicals
Jan 1, 2011 Dec 31, 2013 1,1,1-Trichloroethane MR No Yes 0.2 mg/L Resolved Dec 31, 2013 Volatile Organic Chemicals
Jan 1, 2011 Dec 31, 2011 Di(2-ethylhexyl) phthalate MR No Yes 0.006 mg/L Resolved Dec 31, 2011 Synthetic Organic Chemicals
Jan 1, 2011 Dec 31, 2013 p-Dichlorobenzene MR No Yes 0.075 mg/L Resolved Dec 31, 2013 Volatile Organic Chemicals
Jan 1, 2011 Dec 31, 2013 Tetrachloroethylene MR No Yes 0.005 mg/L Resolved Dec 31, 2013 Volatile Organic Chemicals
Jan 1, 2011 Dec 31, 2013 1,2,4-Trichlorobenzene MR No Yes 0.07 mg/L Resolved Dec 31, 2013 Volatile Organic Chemicals
Jan 1, 2011 Dec 31, 2011 Toluene MR No Yes 1 mg/L Resolved Dec 31, 2011 Volatile Organic Chemicals
Jan 1, 2011 Dec 31, 2013 Trichloroethylene MR No Yes 0.005 mg/L Resolved Dec 31, 2013 Volatile Organic Chemicals
Jan 1, 2011 Dec 31, 2013 1,1-Dichloroethylene MR No Yes 0.007 mg/L Resolved Dec 31, 2013 Volatile Organic Chemicals
Jan 1, 2011 Dec 31, 2013 1,2-Dichloropropane MR No Yes 0.005 mg/L Resolved Dec 31, 2013 Volatile Organic Chemicals
Jan 1, 2011 Dec 31, 2013 cis-1,2-Dichloroethylene MR No Yes 0.07 mg/L Resolved Dec 31, 2013 Volatile Organic Chemicals
Jan 1, 2011 Dec 31, 2013 Ethylbenzene MR No Yes 0.7 mg/L Resolved Dec 31, 2013 Volatile Organic Chemicals
Jan 1, 2011 Dec 31, 2011 Toluene MR No Yes 1 mg/L Resolved Dec 31, 2011 Volatile Organic Chemicals
Jan 1, 2011 Dec 31, 2013 1,2-Dichloroethane MR No Yes 0.005 mg/L Resolved Dec 31, 2013 Volatile Organic Chemicals
Aug 1, 2010 Aug 31, 2010 Coliform (TCR) MCL Yes No 5% of samples Resolved Aug 31, 2010 Total Coliform Rule
Aug 1, 2010 Aug 31, 2010 Coliform (TCR) MCL Yes No 5% of samples Resolved Aug 31, 2010 Total Coliform Rule
Aug 1, 2010 Aug 31, 2010 Coliform (TCR) MCL Yes No 5% of samples Resolved Aug 31, 2010 Total Coliform Rule
Aug 1, 2010 Aug 31, 2010 Coliform (TCR) MCL Yes No 5% of samples Resolved Aug 31, 2010 Total Coliform Rule
May 1, 2008 May 31, 2008 Coliform (TCR) MR No No 5% of samples Resolved May 31, 2008 Total Coliform Rule
Jan 1, 2005 Dec 31, 2007 Di(2-ethylhexyl) phthalate MCL Yes No .011 MG/L 0.006 mg/L .006 Resolved Dec 31, 2007 Synthetic Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Nitrate MR No Yes 10 mg/L Resolved Dec 31, 2004 Nitrate Rule
Jan 1, 2004 Dec 31, 2004 Nitrate MR No Yes 10 mg/L Resolved Dec 31, 2004 Nitrate Rule
Jan 1, 2004 Dec 31, 2004 Nitrate MR No Yes 10 mg/L Resolved Dec 31, 2004 Nitrate Rule

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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