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WALLOWA LAKE TRAMWAY

Oregon — Transient Non-Community — PWSID: OR4194597

System Information

PWSIDOR4194597
System NameWALLOWA LAKE TRAMWAY
System TypeTransient Non-Community
Water SourceGround Water
Activity StatusActive
Owner TypePrivate
EPA Region10
Serves SchoolNo
WholesalerNo
First ReportedNov 10, 1988
Last ReportedDec 23, 2025

Location & Contact

StateOregon
CityLA GRANDE
ZIP Code97850
AddressPO BOX 3028
OrganizationWALLOWA LAKE TRAMWAY
Phone541-263-0845

Population & Service

Population Served300
Service Connections1

Drinking Water Violations (67)

This water system has 67 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
Sep 2, 2025 — E. COLI MR No Yes — — — Unaddressed — Ground Water Rule
Jul 1, 2025 Jul 31, 2025 Revised Total Coliform Rule MON No Yes — — — Resolved Jul 31, 2025 Revised Total Coliform Rule
Aug 1, 2021 Aug 31, 2021 Revised Total Coliform Rule MON No Yes — — — Resolved Aug 31, 2021 Revised Total Coliform Rule
Oct 6, 2019 — E. COLI MR No Yes — — — Unaddressed — Ground Water Rule
Nov 13, 2016 — Revised Total Coliform Rule TT Yes No — — — Resolved Dec 5, 2016 Revised Total Coliform Rule
Nov 13, 2016 — Revised Total Coliform Rule TT Yes No — — — Resolved Dec 5, 2016 Revised Total Coliform Rule
Oct 10, 2016 — E. COLI MR No Yes — — — Unaddressed — Ground Water Rule
Aug 1, 2016 Aug 31, 2016 Revised Total Coliform Rule MON No Yes — — — Resolved Aug 31, 2016 Revised Total Coliform Rule
Jun 1, 2016 Jun 30, 2016 Revised Total Coliform Rule MON No Yes — — — Archived Jun 30, 2016 Revised Total Coliform Rule
Jul 1, 2015 Sep 30, 2015 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 2015 Total Coliform Rule
Jan 1, 2015 Dec 31, 2015 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2015 Nitrate Rule
Jan 1, 2015 Dec 31, 2015 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2015 Nitrate Rule
Jan 1, 2014 Dec 31, 2014 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2014 Nitrate Rule
Jan 1, 2014 Dec 31, 2014 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2014 Nitrate Rule
Oct 25, 2012 — Public Notice Other No No — — — Resolved Jun 22, 2016 Public Notice Rule and Revised PN Rule
Oct 25, 2012 — Public Notice Other No No — — — Resolved Jun 22, 2016 Public Notice Rule and Revised PN Rule
Sep 1, 2012 Sep 30, 2012 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 2012 Total Coliform Rule
Sep 1, 2012 Sep 30, 2012 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 2012 Total Coliform Rule
Jul 1, 2012 Sep 30, 2012 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Sep 30, 2012 Total Coliform Rule
Jul 1, 2012 Sep 30, 2012 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Sep 30, 2012 Total Coliform Rule
Jul 1, 2012 Sep 30, 2012 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Sep 30, 2012 Total Coliform Rule
Apr 1, 2010 Jun 30, 2010 Coliform (TCR) MR No No — 5% of samples — Resolved Jun 30, 2010 Total Coliform Rule
Apr 1, 2010 Jun 30, 2010 Coliform (TCR) MR No No — 5% of samples — Resolved Jun 30, 2010 Total Coliform Rule
Jan 1, 2010 Dec 31, 2010 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2010 Nitrate Rule
Jan 1, 2010 Dec 31, 2010 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2010 Nitrate Rule
Apr 1, 2009 Jun 30, 2009 Coliform (TCR) MR No No — 5% of samples — Resolved Jun 30, 2009 Total Coliform Rule
Apr 1, 2009 Jun 30, 2009 Coliform (TCR) MR No No — 5% of samples — Resolved Jun 30, 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 Dec 31, 2009 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2009 Nitrate Rule
Jan 1, 2009 Dec 31, 2009 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2009 Nitrate Rule
Apr 1, 2008 Jun 30, 2008 Coliform (TCR) MR No No — 5% of samples — Resolved Jun 30, 2008 Total Coliform Rule
Jan 1, 2008 Dec 31, 2008 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2008 Nitrate Rule
Sep 1, 2007 Sep 30, 2007 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 2007 Total Coliform Rule
Jul 1, 2007 Sep 30, 2007 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 2007 Total Coliform Rule
Apr 1, 2007 Jun 30, 2007 Coliform (TCR) MR No No — 5% of samples — Resolved Jun 30, 2007 Total Coliform Rule
Jul 1, 2005 Sep 30, 2005 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 2005 Total Coliform Rule
Apr 1, 2005 Jun 30, 2005 Coliform (TCR) MR No No — 5% of samples — Resolved Jun 30, 2005 Total Coliform Rule
Jan 1, 2005 Dec 31, 2005 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2005 Nitrate Rule
Jul 1, 2004 Sep 30, 2004 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 2004 Total Coliform Rule
Jan 1, 2004 Dec 31, 2004 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2004 Nitrate Rule
Jul 1, 2003 Sep 30, 2003 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 2003 Total Coliform Rule
Apr 1, 2003 Jun 30, 2003 Coliform (TCR) MR No No — 5% of samples — Resolved Jun 30, 2003 Total Coliform Rule
Jan 1, 2003 Dec 31, 2003 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2003 Nitrate Rule
Jul 1, 2002 Sep 30, 2002 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 2002 Total Coliform Rule
Apr 1, 2002 Jun 30, 2002 Coliform (TCR) MR No No — 5% of samples — Resolved Jun 30, 2002 Total Coliform Rule
Jan 1, 2002 Dec 31, 2002 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2002 Nitrate Rule
Jul 1, 2001 Sep 30, 2001 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 2001 Total Coliform Rule
Apr 1, 2001 Jun 30, 2001 Coliform (TCR) MR No No — 5% of samples — Resolved Jun 30, 2001 Total Coliform Rule
Apr 1, 2001 Jun 30, 2001 Coliform (TCR) MR No No — 5% of samples — Resolved Jun 30, 2001 Total Coliform Rule
Jan 1, 2001 Dec 31, 2001 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2001 Nitrate 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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