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SOUTH UMPQUA WATER ASSOCIATION

Oregon — Community Water System — PWSID: OR4100705

System Information

PWSIDOR4100705
System NameSOUTH UMPQUA WATER ASSOCIATION
System TypeCommunity Water System
Water SourceSurface Water Purchased
Activity StatusActive
Owner TypePrivate
EPA Region10
Serves SchoolNo
WholesalerNo
First ReportedMar 12, 1979
Last ReportedDec 23, 2025

Location & Contact

StateOregon
CityRIDDLE
ZIP Code97469
AddressPO BOX 106
OrganizationSOUTH UMPQUA WATER ASSOCIATION
Phone541-874-2387

Population & Service

Population Served575
Service Connections287

Drinking Water Violations (31)

This water system has 31 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
Jul 1, 2023 — Consumer Confidence Rule Other No No — — — Resolved Jun 17, 2024 Consumer Confidence Rule
Jan 1, 2015 Mar 31, 2015 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Mar 31, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2015 Mar 31, 2015 TTHM MR No Yes — 0.080 mg/L — Resolved Mar 31, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Dec 1, 2012 Dec 31, 2012 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2012 Total Coliform Rule
Dec 1, 2012 Dec 31, 2012 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2012 Total Coliform Rule
Jan 1, 2012 Jan 31, 2012 Coliform (TCR) MR No No — 5% of samples — Resolved Jan 31, 2012 Total Coliform Rule
Jan 1, 2012 Jan 31, 2012 Coliform (TCR) MR No No — 5% of samples — Resolved Jan 31, 2012 Total Coliform Rule
Jan 1, 2010 Dec 31, 2010 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Archived Dec 31, 2010 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2010 Dec 31, 2010 TTHM MR No Yes — 0.080 mg/L — Archived Dec 31, 2010 Stage 1 Disinfectants and Disinfection Byproducts Rule
May 1, 2009 May 31, 2009 Coliform (TCR) MR No No — 5% of samples — Resolved May 31, 2009 Total Coliform Rule
May 1, 2009 May 31, 2009 Coliform (TCR) MR No No — 5% of samples — Resolved May 31, 2009 Total Coliform Rule
Jan 1, 2009 Jan 31, 2009 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Archived Jan 31, 2009 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2009 Jan 31, 2009 TTHM MR No Yes — 0.080 mg/L — Archived Jan 31, 2009 Stage 1 Disinfectants and Disinfection Byproducts Rule
Nov 1, 2008 Nov 30, 2008 Coliform (TCR) MR No No — 5% of samples — Resolved Nov 30, 2008 Total Coliform Rule
Oct 1, 2008 Oct 31, 2008 Coliform (TCR) MR No No — 5% of samples — Resolved Oct 31, 2008 Total Coliform Rule
Oct 1, 2007 Oct 31, 2007 Coliform (TCR) MR No No — 5% of samples — Resolved Oct 31, 2007 Total Coliform Rule
Apr 1, 2007 Jun 30, 2007 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Jun 30, 2007 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2007 Jun 30, 2007 TTHM MR No Yes — 0.080 mg/L — Resolved Jun 30, 2007 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 19, 2004 — Consumer Confidence Rule Other No No — — — Resolved Nov 26, 2004 Consumer Confidence Rule
Jul 1, 2004 — Consumer Confidence Rule Other No No — — — Resolved Nov 26, 2004 Consumer Confidence Rule
Oct 19, 2002 — Consumer Confidence Rule Other No No — — — Resolved Mar 25, 2003 Consumer Confidence Rule
Apr 1, 2001 Apr 30, 2001 Coliform (TCR) MR No No — 5% of samples — Resolved Apr 30, 2001 Total Coliform Rule
Sep 1, 2000 Sep 30, 2000 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 2000 Total Coliform Rule
Sep 1, 2000 Sep 30, 2000 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 2000 Total Coliform Rule
Feb 1, 1998 Feb 28, 1998 Coliform (TCR) MR No No — 5% of samples — Resolved Feb 28, 1998 Total Coliform Rule
Oct 1, 1995 Oct 31, 1995 Coliform (TCR) MR No No — 5% of samples — Resolved Oct 31, 1995 Total Coliform Rule
Apr 1, 1994 Apr 30, 1994 Coliform (TCR) MR No No — 5% of samples — Resolved Apr 30, 1994 Total Coliform Rule
Nov 1, 1993 Nov 30, 1993 Coliform (TCR) MR No No — 5% of samples — Resolved Nov 30, 1993 Total Coliform Rule
Sep 1, 1992 Sep 30, 1992 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Sep 30, 1992 Total Coliform Rule
Mar 1, 1992 Mar 31, 1992 Coliform (TCR) MR No No — 5% of samples — Resolved Mar 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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