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RAINBOW FALLS STATE PARK

Washington — Transient Non-Community — PWSID: WA53SP720

System Information

PWSIDWA53SP720
System NameRAINBOW FALLS STATE PARK
System TypeTransient Non-Community
Water SourceGround Water
Activity StatusActive
Owner TypeState
EPA Region10
Serves SchoolNo
WholesalerNo
First ReportedFeb 7, 1981
Last ReportedDec 11, 2025

Location & Contact

StateWashington
CityOlympia
ZIP Code98512
Address11838 Tilley Rd South
OrganizationRAINBOW FALLS STATE PARK
Phone—

Population & Service

Population Served321
Service Connections30

Drinking Water Violations (30)

This water system has 30 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, 2020 Dec 31, 2020 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2020 Nitrate Rule
Feb 1, 2018 Feb 28, 2018 Revised Total Coliform Rule MON No Yes — — — Resolved Feb 28, 2018 Revised Total Coliform Rule
Aug 1, 2015 Aug 31, 2015 Coliform (TCR) MR No No — 5% of samples — Resolved Aug 31, 2015 Total Coliform Rule
Mar 1, 2012 Mar 31, 2012 Coliform (TCR) MR No No — 5% of samples — Resolved Mar 31, 2012 Total Coliform Rule
Sep 1, 2011 Sep 30, 2011 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 2011 Total Coliform Rule
Jun 1, 2011 Jun 30, 2011 Coliform (TCR) MR No No — 5% of samples — Resolved Jun 30, 2011 Total Coliform Rule
Apr 1, 2011 Apr 30, 2011 Coliform (TCR) MR No No — 5% of samples — Resolved Apr 30, 2011 Total Coliform Rule
Dec 1, 2010 Dec 31, 2010 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2010 Total Coliform Rule
Jan 1, 2007 Dec 31, 2007 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2007 Nitrate Rule
Jan 1, 2007 Dec 31, 2007 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2007 Nitrate Rule
Jan 1, 2007 Dec 31, 2007 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2007 Nitrate Rule
Jan 1, 2007 Dec 31, 2007 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2007 Nitrate Rule
Jan 1, 2007 Dec 31, 2007 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2007 Nitrate Rule
Jan 1, 2007 Dec 31, 2007 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2007 Nitrate Rule
Dec 1, 2005 Dec 31, 2005 Coliform (TCR) MR No No — 5% of samples — Archived Dec 31, 2005 Total Coliform Rule
Jun 1, 2005 Jun 30, 2005 Coliform (TCR) MR No No — 5% of samples — Archived Jun 30, 2005 Total Coliform Rule
Sep 1, 2004 Sep 30, 2004 Coliform (TCR) MR No No — 5% of samples — Archived Sep 30, 2004 Total Coliform Rule
Apr 1, 2004 Apr 30, 2004 Coliform (TCR) MR No No — 5% of samples — Archived Apr 30, 2004 Total Coliform Rule
Apr 1, 2000 Apr 30, 2000 Coliform (TCR) MR No Yes — 5% of samples — Archived Apr 30, 2000 Total Coliform Rule
Sep 1, 1999 Sep 30, 1999 Coliform (TCR) MR No Yes — 5% of samples — Archived Sep 30, 1999 Total Coliform Rule
Apr 1, 1999 Apr 30, 1999 Coliform (TCR) MR No Yes — 5% of samples — Archived Apr 30, 1999 Total Coliform Rule
Jul 1, 1996 Jul 31, 1996 Coliform (TCR) MR No Yes — 5% of samples — Archived Jul 31, 1996 Total Coliform Rule
Jun 1, 1996 Jun 30, 1996 Coliform (TCR) MR No Yes — 5% of samples — Archived Jun 30, 1996 Total Coliform Rule
Nov 1, 1995 Nov 30, 1995 Coliform (TCR) MR No Yes — 5% of samples — Archived Nov 30, 1995 Total Coliform Rule
Oct 1, 1995 Oct 31, 1995 Coliform (TCR) MCL Yes No — 5% of samples — Archived Oct 31, 1995 Total Coliform Rule
Sep 1, 1992 Sep 30, 1992 Coliform (TCR) MR No Yes — 5% of samples — Archived Sep 30, 1992 Total Coliform Rule
Feb 1, 1992 Feb 29, 1992 Coliform (TCR) MCL Yes No — 5% of samples — Archived Feb 29, 1992 Total Coliform Rule
Feb 1, 1992 Feb 29, 1992 Coliform (TCR) MCL Yes No — 5% of samples — Archived Feb 29, 1992 Total Coliform Rule
Feb 1, 1992 Feb 29, 1992 Coliform (TCR) MCL Yes No — 5% of samples — Archived Feb 29, 1992 Total Coliform Rule
Feb 1, 1992 Feb 29, 1992 Coliform (TCR) MCL Yes No — 5% of samples — Archived Feb 29, 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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