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PATTISON 500

Washington — Community Water System — PWSID: WA5366578

System Information

PWSIDWA5366578
System NamePATTISON 500
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region10
Serves SchoolNo
WholesalerYes
First ReportedFeb 7, 1981
Last ReportedDec 11, 2025

Location & Contact

StateWashington
CityLacey
ZIP Code98503
Address1230 Ruddell Rd SE
OrganizationPATTISON 500
Phone—

Population & Service

Population Served4,302
Service Connections1,865

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
Jul 1, 2012 — Consumer Confidence Rule Other No No — — — Resolved Oct 22, 2012 Consumer Confidence Rule
Jul 1, 2011 — Consumer Confidence Rule Other No No — — — Resolved Oct 31, 2011 Consumer Confidence 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
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, 2005 Dec 31, 2007 Diquat MR No Yes — 0.02 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Jan 1, 2005 Dec 31, 2007 Diquat MR No Yes — 0.02 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Jan 1, 2005 Dec 31, 2007 Diquat MR No Yes — 0.02 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Jan 1, 2005 Dec 31, 2007 Diquat MR No Yes — 0.02 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Jan 1, 2005 Dec 31, 2007 Diquat MR No Yes — 0.02 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Jan 1, 2005 Dec 31, 2007 Diquat MR No Yes — 0.02 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Jan 1, 2005 Dec 31, 2007 Diquat MR No Yes — 0.02 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Jan 1, 2005 Dec 31, 2007 Diquat MR No Yes — 0.02 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Jan 1, 2005 Dec 31, 2007 Diquat MR No Yes — 0.02 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Jan 1, 2005 Dec 31, 2007 Diquat MR No Yes — 0.02 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Jan 1, 2005 Dec 31, 2007 Diquat MR No Yes — 0.02 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Jan 1, 2005 Dec 31, 2007 Diquat MR No Yes — 0.02 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Jan 1, 2005 Dec 31, 2007 Diquat MR No Yes — 0.02 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Jan 1, 2005 Dec 31, 2007 Diquat MR No Yes — 0.02 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Jan 1, 2005 Dec 31, 2007 Diquat MR No Yes — 0.02 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2004 Nitrate Rule
Jan 1, 2002 Dec 31, 2004 Selenium MR No Yes — 0.05 mg/L — Archived Dec 31, 2004 Inorganic Chemicals
Jan 1, 2002 Dec 31, 2004 Chromium MR No Yes — 0.1 mg/L — Archived Dec 31, 2004 Inorganic Chemicals
Jan 1, 2002 Dec 31, 2004 Barium MR No Yes — 2 mg/L — Archived Dec 31, 2004 Inorganic Chemicals
Jan 1, 2002 Dec 31, 2004 Antimony, Total MR No Yes — 0.006 mg/L — Archived Dec 31, 2004 Inorganic Chemicals
Jan 1, 2002 Dec 31, 2004 Thallium, Total MR No Yes — 0.002 mg/L — Archived Dec 31, 2004 Inorganic Chemicals
Jan 1, 2002 Dec 31, 2004 Fluoride MR No Yes — 4.0 mg/L — Archived Dec 31, 2004 Inorganic Chemicals
Jan 1, 2002 Dec 31, 2004 Nickel MR No Yes — — — Archived Dec 31, 2004 Inorganic Chemicals
Jan 1, 2002 Dec 31, 2004 Beryllium, Total MR No Yes — 0.004 mg/L — Archived Dec 31, 2004 Inorganic Chemicals
Jan 1, 2002 Dec 31, 2004 Mercury MR No Yes — 0.002 mg/L — Archived Dec 31, 2004 Inorganic Chemicals
Jan 1, 2002 Dec 31, 2004 CYANIDE MR No Yes — 0.2 mg/L — Archived Dec 31, 2004 Inorganic Chemicals
Jan 1, 2002 Dec 31, 2004 Arsenic MR No Yes — 0.010 mg/L — Archived Dec 31, 2004 Arsenic Rule
Jan 1, 2002 Dec 31, 2004 Cadmium MR No Yes — 0.005 mg/L — Archived Dec 31, 2004 Inorganic Chemicals
May 1, 1998 May 31, 1998 Coliform (TCR) MCL Yes No — 5% of samples — Archived May 31, 1998 Total Coliform Rule
May 1, 1998 May 31, 1998 Coliform (TCR) MCL Yes No — 5% of samples — Archived May 31, 1998 Total Coliform Rule
May 1, 1998 May 31, 1998 Coliform (TCR) MCL Yes No — 5% of samples — Archived May 31, 1998 Total Coliform Rule
Apr 1, 1998 Apr 30, 1998 Coliform (TCR) MCL Yes No — 5% of samples — Archived Apr 30, 1998 Total Coliform Rule
Apr 1, 1998 Apr 30, 1998 Coliform (TCR) MCL Yes No — 5% of samples — Archived Apr 30, 1998 Total Coliform Rule
Apr 1, 1998 Apr 30, 1998 Coliform (TCR) MCL Yes No — 5% of samples — Archived Apr 30, 1998 Total Coliform Rule
Nov 1, 1995 Nov 30, 1995 Coliform (TCR) MCL Yes No — 5% of samples — Archived Nov 30, 1995 Total Coliform Rule
Oct 19, 1994 Nov 18, 1994 Coliform (TCR) MR No Yes — 5% of samples — Archived Nov 18, 1994 Total Coliform Rule
Mar 1, 1992 Mar 31, 1992 Coliform (TCR) MR No No — 5% of samples — Archived 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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