MOSIER, CITY OF

Oregon — Community Water System — PWSID: OR4100543

System Information

PWSIDOR4100543
System NameMOSIER, 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
CityENTERPRISE
ZIP Code97828
Address65506 SUNRISE RD
OrganizationMOSIER, CITY OF
Phone541-760-9362

Population & Service

Population Served468
Service Connections217

Drinking Water Violations (140)

This water system has 140 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
Mar 1, 2025 Mar 31, 2025 Revised Total Coliform Rule MON No Yes Resolved Mar 31, 2025 Revised Total Coliform Rule
Feb 1, 2025 Feb 28, 2025 Revised Total Coliform Rule MON No Yes Resolved Feb 28, 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, 2024 Dec 31, 2024 Revised Total Coliform Rule MON No Yes Resolved Dec 31, 2024 Revised Total Coliform Rule
Nov 1, 2024 Nov 30, 2024 Revised Total Coliform Rule MON No Yes Resolved Nov 30, 2024 Revised Total Coliform Rule
Oct 1, 2024 Lead and Copper Rule MR No No TT Unaddressed Lead and Copper Rule
Oct 1, 2024 Oct 31, 2024 Revised Total Coliform Rule MON No Yes Resolved Oct 31, 2024 Revised Total Coliform Rule
Sep 1, 2024 Sep 30, 2024 Revised Total Coliform Rule MON No Yes Resolved Sep 30, 2024 Revised Total Coliform Rule
Aug 1, 2024 Aug 31, 2024 Revised Total Coliform Rule MON No Yes Resolved Aug 31, 2024 Revised Total Coliform Rule
Jul 1, 2024 Jul 31, 2024 Revised Total Coliform Rule MON No Yes Resolved Jul 31, 2024 Revised Total Coliform Rule
Jan 1, 2022 Dec 31, 2024 Total Haloacetic Acids (HAA5) MR No Yes 0.060 mg/L Archived Dec 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2022 Dec 31, 2024 TTHM MR No Yes 0.080 mg/L Archived Dec 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2020 Lead and Copper Rule MR No No TT Resolved Aug 26, 2021 Lead and Copper Rule
Aug 1, 2020 Aug 31, 2020 Revised Total Coliform Rule MON No Yes Resolved Aug 31, 2020 Revised Total Coliform Rule
Jan 1, 2018 Dec 31, 2018 COLIPHAGE MR No Yes Resolved Dec 31, 2018 Ground Water Rule
Jan 1, 2018 Dec 31, 2018 Nitrate MR No Yes 10 mg/L Resolved Dec 31, 2018 Nitrate Rule
Oct 1, 2017 Sep 30, 2020 Total Haloacetic Acids (HAA5) MR No Yes 0.060 mg/L Resolved Sep 30, 2020 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2017 Sep 30, 2020 TTHM MR No Yes 0.080 mg/L Resolved Sep 30, 2020 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2017 Lead and Copper Rule MR No No TT Resolved Oct 6, 2017 Lead and Copper Rule
Dec 1, 2016 Dec 31, 2016 Revised Total Coliform Rule MON No Yes Resolved Dec 31, 2016 Revised Total Coliform Rule
Jan 1, 2014 Lead and Copper Rule MR No No TT Resolved Feb 12, 2014 Lead and Copper Rule
Jul 1, 2012 Jul 31, 2012 Coliform (TCR) MCL Yes No 5% of samples Resolved Jul 31, 2012 Total Coliform Rule
Jul 1, 2012 Jul 31, 2012 Coliform (TCR) MCL Yes No 5% of samples Resolved Jul 31, 2012 Total Coliform Rule
Jul 1, 2012 Jul 31, 2012 Coliform (TCR) MCL Yes No 5% of samples Resolved Jul 31, 2012 Total Coliform Rule
Jul 1, 2012 Jul 31, 2012 Coliform (TCR) MCL Yes No 5% of samples Resolved Jul 31, 2012 Total Coliform Rule
Jul 1, 2012 Jul 31, 2012 Coliform (TCR) MCL Yes No 5% of samples Resolved Jul 31, 2012 Total Coliform Rule
Jan 1, 2012 Dec 31, 2012 COLIPHAGE MR No Yes Resolved Dec 31, 2012 Ground Water Rule
Jan 1, 2012 Dec 31, 2012 COLIPHAGE MR No Yes Resolved Dec 31, 2012 Ground Water Rule
Feb 1, 2010 Feb 28, 2010 Coliform (TCR) MCL Yes No 5% of samples Resolved Feb 28, 2010 Total Coliform Rule
Feb 1, 2010 Feb 28, 2010 Coliform (TCR) MCL Yes No 5% of samples Resolved Feb 28, 2010 Total Coliform Rule
Feb 1, 2010 Feb 28, 2010 Coliform (TCR) MCL Yes No 5% of samples Resolved Feb 28, 2010 Total Coliform Rule
Jul 1, 2009 Jul 31, 2009 Coliform (TCR) MR No No 5% of samples Resolved Jul 31, 2009 Total Coliform Rule
Jul 1, 2009 Jul 31, 2009 Coliform (TCR) MR No No 5% of samples Resolved Jul 31, 2009 Total Coliform Rule
Jan 1, 2009 Dec 31, 2009 Nitrate MR No Yes 10 mg/L Resolved Dec 31, 2009 Nitrate Rule
Jan 1, 2009 Jan 31, 2009 TTHM MR No Yes 0.080 mg/L Resolved Jan 31, 2009 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2009 Jan 31, 2009 TTHM MR No Yes 0.080 mg/L Resolved Jan 31, 2009 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2009 Dec 31, 2009 Nitrate MR No Yes 10 mg/L Resolved Dec 31, 2009 Nitrate Rule
Jan 1, 2009 Jan 31, 2009 Total Haloacetic Acids (HAA5) MR No Yes 0.060 mg/L Resolved Jan 31, 2009 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2009 Jan 31, 2009 Total Haloacetic Acids (HAA5) MR No Yes 0.060 mg/L Resolved Jan 31, 2009 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2008 Dec 31, 2008 TTHM MR No Yes 0.080 mg/L Resolved Dec 31, 2008 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2008 Dec 31, 2008 Total Haloacetic Acids (HAA5) MR No Yes 0.060 mg/L Resolved Dec 31, 2008 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2005 Dec 31, 2007 Styrene MR No Yes 0.1 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2007 CHLOROBENZENE MR No Yes 0.1 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2007 Ethylbenzene MR No Yes 0.7 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2007 1,2,4-Trichlorobenzene MR No Yes 0.07 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2007 cis-1,2-Dichloroethylene MR No Yes 0.07 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2007 1,1,2-Trichloroethane MR No Yes 0.005 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2007 DICHLOROMETHANE MR No Yes 0.005 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2007 DICHLOROMETHANE MR No Yes 0.005 mg/L Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2007 trans-1,2-Dichloroethylene 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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