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PENDLETON, CITY OF

Oregon — Community Water System — PWSID: OR4100613

System Information

PWSIDOR4100613
System NamePENDLETON, CITY OF
System TypeCommunity Water System
Water SourceSurface Water
Activity StatusActive
Owner TypeLocal
EPA Region10
Serves SchoolNo
WholesalerNo
First ReportedMar 12, 1979
Last ReportedDec 23, 2025

Location & Contact

StateOregon
CityPENDLETON
ZIP Code97801
Address500 SW DORION AVE
OrganizationPENDLETON, CITY OF
Phone541-966-0202

Population & Service

Population Served16,996
Service Connections6,020

Drinking Water Violations (63)

This water system has 63 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 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2024 Dec 31, 2024 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2024 Sep 30, 2024 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2024 Sep 30, 2024 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2023 — Consumer Confidence Rule Other No No — — — Resolved Jul 1, 2024 Consumer Confidence Rule
Jul 1, 2023 — Consumer Confidence Rule Other No No — — — Resolved Jul 3, 2023 Consumer Confidence Rule
Jan 1, 2019 Mar 31, 2019 TTHM MR No Yes — 0.080 mg/L — Resolved Mar 31, 2019 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2019 Mar 31, 2019 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Mar 31, 2019 Stage 2 Disinfectants and Disinfection Byproducts Rule
Nov 1, 2018 Nov 30, 2018 Surface Water Treatment Rule MR No Yes — — — Resolved Nov 30, 2018 Surface Water Treatment Rule
Nov 1, 2018 Nov 30, 2018 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Nov 30, 2018 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Nov 1, 2018 Nov 30, 2018 Surface Water Treatment Rule MR No Yes — — — Resolved Nov 30, 2018 Surface Water Treatment Rule
Feb 1, 2015 Feb 28, 2015 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Feb 28, 2015 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Feb 1, 2015 Feb 28, 2015 Surface Water Treatment Rule MR No Yes — — — Resolved Feb 28, 2015 Surface Water Treatment Rule
Feb 1, 2015 Feb 28, 2015 Surface Water Treatment Rule MR No Yes — — — Resolved Feb 28, 2015 Surface Water Treatment Rule
Mar 1, 2012 Mar 31, 2012 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Mar 31, 2012 Total Coliform Rule
Mar 1, 2012 Mar 31, 2012 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Mar 31, 2012 Total Coliform Rule
Mar 1, 2012 Mar 31, 2012 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Mar 31, 2012 Total Coliform Rule
Mar 1, 2012 Mar 31, 2012 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Mar 31, 2012 Total Coliform Rule
Mar 1, 2011 Mar 31, 2011 Surface Water Treatment Rule MR No Yes — — — Resolved Mar 31, 2011 Surface Water Treatment Rule
Mar 1, 2011 Mar 31, 2011 Surface Water Treatment Rule MR No Yes — — — Resolved Mar 31, 2011 Surface Water Treatment Rule
Mar 1, 2011 Mar 31, 2011 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Mar 31, 2011 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Mar 1, 2011 Mar 31, 2011 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Mar 31, 2011 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Apr 1, 2010 Apr 30, 2010 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Apr 30, 2010 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Apr 1, 2010 Apr 30, 2010 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Apr 30, 2010 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Apr 1, 2010 Apr 30, 2010 Surface Water Treatment Rule MR No Yes — — — Resolved Apr 30, 2010 Surface Water Treatment Rule
Apr 1, 2010 Apr 30, 2010 Surface Water Treatment Rule MR No Yes — — — Resolved Apr 30, 2010 Surface Water Treatment Rule
Jan 1, 2008 Jan 31, 2008 Coliform (TCR) MR No No — 5% of samples — Resolved Jan 31, 2008 Total Coliform Rule
Apr 1, 2001 — Surface Water Treatment Rule TT Yes No — — — Resolved Jan 6, 2003 Surface Water Treatment Rule
Apr 1, 2001 — Surface Water Treatment Rule TT Yes No — — — Resolved Jan 6, 2003 Surface Water Treatment Rule
Apr 1, 2001 — Surface Water Treatment Rule TT Yes No — — — Resolved Jan 6, 2003 Surface Water Treatment Rule
Apr 1, 2001 — Surface Water Treatment Rule TT Yes No — — — Resolved Jan 6, 2003 Surface Water Treatment Rule
Apr 1, 2001 — Surface Water Treatment Rule TT Yes No — — — Resolved Jan 6, 2003 Surface Water Treatment Rule
Apr 1, 2001 — Surface Water Treatment Rule TT Yes No — — — Resolved Jan 6, 2003 Surface Water Treatment Rule
Apr 1, 2001 — Surface Water Treatment Rule TT Yes No — — — Resolved Jan 6, 2003 Surface Water Treatment Rule
Apr 1, 2001 — Surface Water Treatment Rule TT Yes No — — — Resolved Jan 6, 2003 Surface Water Treatment Rule
Feb 1, 1997 Feb 28, 1997 Coliform (TCR) MR No No — 5% of samples — Resolved Feb 28, 1997 Total Coliform Rule
Nov 1, 1996 Nov 30, 1996 Coliform (TCR) MR No No — 5% of samples — Resolved Nov 30, 1996 Total Coliform Rule
Jul 1, 1996 Jul 31, 1996 Coliform (TCR) MR No No — 5% of samples — Resolved Jul 31, 1996 Total Coliform Rule
Dec 1, 1995 Dec 31, 1995 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 1995 Total Coliform Rule
Dec 1, 1995 Dec 31, 1995 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Dec 31, 1995 Total Coliform Rule
Dec 1, 1995 Dec 31, 1995 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Dec 31, 1995 Total Coliform Rule
Dec 1, 1995 Dec 31, 1995 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Dec 31, 1995 Total Coliform Rule
Dec 1, 1995 Dec 31, 1995 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Dec 31, 1995 Total Coliform Rule
Dec 1, 1995 Dec 31, 1995 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Dec 31, 1995 Total Coliform Rule
Dec 1, 1995 Dec 31, 1995 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Dec 31, 1995 Total Coliform Rule
Dec 1, 1995 Dec 31, 1995 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 1995 Total Coliform Rule
Dec 1, 1995 Dec 31, 1995 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 1995 Total Coliform Rule
Nov 1, 1995 Nov 30, 1995 Coliform (TCR) MR No No — 5% of samples — Resolved Nov 30, 1995 Total Coliform Rule
Nov 1, 1995 Nov 30, 1995 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Nov 30, 1995 Total Coliform Rule
Jun 1, 1995 Jun 30, 1995 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jun 30, 1995 Total Coliform 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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