CORNELIUS, CITY OF

Oregon — Community Water System — PWSID: OR4100218

System Information

PWSIDOR4100218
System NameCORNELIUS, CITY OF
System TypeCommunity Water System
Water SourceSurface Water Purchased
Activity StatusActive
Owner TypeLocal
EPA Region10
Serves SchoolNo
WholesalerNo
First ReportedMar 12, 1979
Last ReportedMar 25, 2026

Location & Contact

StateOregon
CityCORNELIUS
ZIP Code97113-8912
Address1355 N BARLOW ST
OrganizationCORNELIUS, CITY OF
Phone503-702-6046

Population & Service

Population Served14,490
Service Connections4,153

Drinking Water Violations (42)

This water system has 42 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, 2024 Dec 31, 2024 MR No Yes Resolved Dec 31, 2024
Jul 1, 2023 Other No No Resolved Jul 20, 2023
Jul 1, 2022 Sep 30, 2022 MR No Yes 0.005 mg/L Resolved Sep 30, 2022
Jul 1, 2022 Sep 30, 2022 MR No Yes 0.080 mg/L Resolved Sep 30, 2022
Jul 1, 2022 Sep 30, 2022 MR No Yes 0.060 mg/L Resolved Sep 30, 2022
Apr 1, 2020 Jun 30, 2020 MR No Yes 30 ug/L Resolved Jun 30, 2020
Apr 1, 2020 Jun 30, 2020 MR No Yes 15 pCi/L Resolved Jun 30, 2020
Apr 1, 2020 Jun 30, 2020 MR No Yes 5 pCi/L Resolved Jun 30, 2020
May 1, 2018 May 31, 2018 MON No No Resolved May 31, 2018
Apr 1, 2014 Jun 30, 2014 MR No Yes 0.080 mg/L Resolved Jun 30, 2014
Apr 1, 2014 Jun 30, 2014 MR No Yes 0.060 mg/L Resolved Jun 30, 2014
May 1, 2013 May 31, 2013 MR No No 5% of samples Resolved May 31, 2013
Sep 1, 2012 Sep 30, 2012 MR No No 5% of samples Resolved Sep 30, 2012
Sep 1, 2012 Sep 30, 2012 MR No No 5% of samples Resolved Sep 30, 2012
Feb 1, 2009 Feb 28, 2009 MR No No 5% of samples Resolved Feb 28, 2009
Oct 1, 2007 Dec 31, 2007 MR No Yes 0.080 mg/L Resolved Dec 31, 2007
Oct 1, 2007 Dec 31, 2007 MR No Yes 0.060 mg/L Resolved Dec 31, 2007
Jul 1, 2007 Sep 30, 2007 MR No Yes 0.080 mg/L Resolved Sep 30, 2007
Jul 1, 2007 Jul 31, 2007 MR No No 5% of samples Resolved Jul 31, 2007
Jul 1, 2007 Sep 30, 2007 MR No Yes 0.060 mg/L Resolved Sep 30, 2007
Apr 1, 2007 Jun 30, 2007 MR No Yes 0.060 mg/L Resolved Jun 30, 2007
Apr 1, 2007 Jun 30, 2007 MR No Yes 0.080 mg/L Resolved Jun 30, 2007
Oct 1, 2006 Oct 31, 2006 MR No No 5% of samples Resolved Oct 31, 2006
Sep 1, 2006 Sep 30, 2006 MR No No 5% of samples Resolved Sep 30, 2006
Jan 1, 2005 MR No No TT Resolved Sep 22, 2005
Oct 19, 2004 Other No No Resolved Dec 2, 2004
Jul 1, 2004 Other No No Resolved Dec 2, 2004
Oct 19, 2003 Other No No Resolved Mar 2, 2004
Jul 1, 2003 Other No No Resolved Mar 2, 2004
Jun 1, 2002 Jun 30, 2002 MR No No 5% of samples Resolved Jun 30, 2002
Nov 1, 2001 Nov 30, 2001 MR No No 5% of samples Resolved Nov 30, 2001
Oct 1, 2000 Other No No Resolved Aug 15, 2001
Jul 1, 2000 Other No No Resolved Aug 15, 2001
Jan 1, 1999 Jan 31, 1999 MR No No 5% of samples Resolved Jan 31, 1999
May 1, 1998 May 31, 1998 MR No No 5% of samples Resolved May 31, 1998
Sep 1, 1996 Sep 30, 1996 MR No No 5% of samples Resolved Sep 30, 1996
Mar 1, 1996 Mar 31, 1996 MR No No 5% of samples Resolved Mar 31, 1996
Mar 1, 1996 Mar 31, 1996 MR No No 5% of samples Resolved Mar 31, 1996
Mar 1, 1996 Mar 31, 1996 MR No No 5% of samples Resolved Mar 31, 1996
Nov 1, 1992 Nov 30, 1992 MR No No 5% of samples Resolved Nov 30, 1992
Jul 1, 1992 Jan 31, 1993 MR No No TT Resolved Jan 31, 1993
May 1, 1991 May 31, 1991 MR No No 5% of samples Resolved May 31, 1991

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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