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KELSO WATER ASSN

Oregon — Community Water System — PWSID: OR4100134

System Information

PWSIDOR4100134
System NameKELSO WATER ASSN
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypePrivate
EPA Region10
Serves SchoolNo
WholesalerNo
First ReportedMar 12, 1979
Last ReportedDec 23, 2025

Location & Contact

StateOregon
CitySANDY
ZIP Code97055
AddressPO BOX 1981
OrganizationKELSO WATER ASSN
Phone503-806-4734

Population & Service

Population Served300
Service Connections102

Drinking Water Violations (54)

This water system has 54 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 Jul 29, 2025 Consumer Confidence Rule
Oct 1, 2024 — Lead and Copper Rule MR No No — TT — Resolved Jun 25, 2025 Lead and Copper Rule
Jul 1, 2024 — Consumer Confidence Rule Other No No — — — Resolved Sep 26, 2024 Consumer Confidence Rule
Jan 1, 2024 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, 2024 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 Oct 31, 2020 Revised Total Coliform Rule MON No Yes — — — Resolved Oct 31, 2020 Revised Total Coliform Rule
Mar 1, 2020 Mar 31, 2020 Revised Total Coliform Rule MON No Yes — — — Resolved Mar 31, 2020 Revised Total Coliform Rule
Sep 1, 2017 Sep 30, 2017 Revised Total Coliform Rule MON No Yes — — — Resolved Sep 30, 2017 Revised Total Coliform Rule
Jan 1, 2016 Sep 30, 2016 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2016 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2016 Sep 30, 2016 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2016 Stage 2 Disinfectants and Disinfection Byproducts Rule
Dec 1, 2014 Dec 31, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2014 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
Apr 1, 2009 Apr 30, 2009 Coliform (TCR) MR No No — 5% of samples — Resolved Apr 30, 2009 Total Coliform Rule
Apr 1, 2009 Apr 30, 2009 Coliform (TCR) MR No No — 5% of samples — Resolved Apr 30, 2009 Total Coliform Rule
Dec 1, 2007 Dec 31, 2007 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2007 Total Coliform Rule
Jul 1, 2003 Jul 31, 2003 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jul 31, 2003 Total Coliform Rule
Jul 1, 2003 Jul 31, 2003 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jul 31, 2003 Total Coliform Rule
Oct 19, 2002 — Consumer Confidence Rule Other No No — — — Resolved Mar 26, 2003 Consumer Confidence Rule
Jan 1, 2002 Dec 31, 2004 Arsenic MR No Yes — 0.010 mg/L — Resolved Dec 31, 2004 Arsenic Rule
Dec 1, 2000 Dec 31, 2000 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Dec 31, 2000 Total Coliform Rule
Dec 1, 2000 Dec 31, 2000 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Dec 31, 2000 Total Coliform Rule
Oct 1, 2000 — Consumer Confidence Rule Other No No — — — Resolved Jul 2, 2001 Consumer Confidence Rule
Sep 1, 1999 Sep 30, 1999 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Sep 30, 1999 Total Coliform Rule
Sep 1, 1999 Sep 30, 1999 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 1999 Total Coliform Rule
Nov 1, 1998 Nov 30, 1998 Coliform (TCR) MR No No — 5% of samples — Resolved Nov 30, 1998 Total Coliform Rule
Nov 1, 1997 Nov 30, 1997 Coliform (TCR) MR No No — 5% of samples — Resolved Nov 30, 1997 Total Coliform Rule
Oct 1, 1997 Oct 31, 1997 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Oct 31, 1997 Total Coliform Rule
Oct 1, 1997 Oct 31, 1997 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Oct 31, 1997 Total Coliform Rule
Aug 1, 1997 Aug 31, 1997 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Aug 31, 1997 Total Coliform Rule
Aug 1, 1997 Aug 31, 1997 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Aug 31, 1997 Total Coliform Rule
Jul 1, 1997 Jul 31, 1997 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jul 31, 1997 Total Coliform Rule
Jul 1, 1997 Jul 31, 1997 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jul 31, 1997 Total Coliform Rule
Aug 1, 1996 Aug 31, 1996 Coliform (TCR) MR No No — 5% of samples — Resolved Aug 31, 1996 Total Coliform Rule
Aug 1, 1996 Aug 31, 1996 Coliform (TCR) MR No No — 5% of samples — Resolved Aug 31, 1996 Total Coliform Rule
Aug 1, 1996 Aug 31, 1996 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Aug 31, 1996 Total Coliform Rule
Aug 1, 1996 Aug 31, 1996 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Aug 31, 1996 Total Coliform Rule
Jul 1, 1995 Jul 31, 1995 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jul 31, 1995 Total Coliform Rule
Jul 1, 1995 Jul 31, 1995 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jul 31, 1995 Total Coliform Rule
Sep 1, 1994 Sep 30, 1994 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Sep 30, 1994 Total Coliform Rule
Sep 1, 1994 Sep 30, 1994 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Sep 30, 1994 Total Coliform Rule
Aug 1, 1994 Aug 31, 1994 Coliform (TCR) MR No No — 5% of samples — Resolved Aug 31, 1994 Total Coliform Rule
Jul 1, 1994 Jul 31, 1994 Coliform (TCR) MR No No — 5% of samples — Resolved Jul 31, 1994 Total Coliform Rule
Jul 1, 1994 — Lead and Copper Rule MR No No — TT — Resolved Jul 1, 1994 Lead and Copper Rule
Jun 1, 1993 Jun 30, 1993 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jun 30, 1993 Total Coliform Rule
May 1, 1993 May 31, 1993 Coliform (TCR) MR No No — 5% of samples — Resolved May 31, 1993 Total Coliform Rule
May 1, 1993 May 31, 1993 Coliform (TCR) MR No No — 5% of samples — Resolved May 31, 1993 Total Coliform Rule
May 1, 1993 May 31, 1993 Coliform (TCR) MCL Yes No — 5% of samples — Resolved May 31, 1993 Total Coliform Rule
Aug 1, 1992 Aug 31, 1992 Coliform (TCR) MR No No — 5% of samples — Resolved Aug 31, 1992 Total Coliform Rule
Jul 1, 1992 Jul 31, 1992 Coliform (TCR) MR No No — 5% of samples — Resolved Jul 31, 1992 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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