ZILLAH CITY OF

Washington — Community Water System — PWSID: WA5399800

System Information

PWSIDWA5399800
System NameZILLAH CITY OF
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region10
Serves SchoolNo
WholesalerNo
First ReportedFeb 7, 1981
Last ReportedDec 11, 2025

Location & Contact

StateWashington
CityZillah
ZIP Code98953
AddressPO Box 475
OrganizationZILLAH CITY OF
Phone

Population & Service

Population Served3,518
Service Connections1,206

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
Oct 1, 2023 Oct 31, 2023 Revised Total Coliform Rule MCL Yes No Resolved Oct 31, 2023 Revised Total Coliform Rule
Jan 1, 2022 Dec 31, 2022 Nitrate MR No Yes 10 mg/L Resolved Dec 31, 2022 Nitrate Rule
Jan 1, 2018 Dec 31, 2018 Nitrate MR No Yes 10 mg/L Resolved Dec 31, 2018 Nitrate Rule
Dec 1, 2017 Dec 31, 2017 Revised Total Coliform Rule MON No No Resolved Dec 31, 2017 Revised Total Coliform Rule
Jan 1, 2008 Dec 31, 2010 Vinyl chloride MR No Yes 0.002 mg/L Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2008 Dec 31, 2010 p-Dichlorobenzene MR No Yes 0.075 mg/L Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2008 Dec 31, 2010 trans-1,2-Dichloroethylene MR No Yes 0.1 mg/L Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Benzene MR No Yes 0.005 mg/L Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2008 Dec 31, 2010 CHLOROBENZENE MR No Yes 0.1 mg/L Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Tetrachloroethylene MR No Yes 0.005 mg/L Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2008 Dec 31, 2010 1,1,2-Trichloroethane MR No Yes 0.005 mg/L Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Trichloroethylene MR No Yes 0.005 mg/L Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Carbon tetrachloride MR No Yes 0.005 mg/L Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2008 Dec 31, 2010 1,1,1-Trichloroethane MR No Yes 0.2 mg/L Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2008 Dec 31, 2010 1,1-Dichloroethylene MR No Yes 0.007 mg/L Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2008 Dec 31, 2010 o-Dichlorobenzene MR No Yes 0.6 mg/L Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2008 Dec 31, 2010 DICHLOROMETHANE MR No Yes 0.005 mg/L Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2008 Dec 31, 2010 cis-1,2-Dichloroethylene MR No Yes 0.07 mg/L Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2008 Dec 31, 2010 1,2,4-Trichlorobenzene MR No Yes 0.07 mg/L Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Toluene MR No Yes 1 mg/L Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2008 Dec 31, 2010 1,2-Dichloropropane MR No Yes 0.005 mg/L Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Ethylbenzene MR No Yes 0.7 mg/L Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2008 Dec 31, 2010 1,2-Dichloroethane MR No Yes 0.005 mg/L Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Styrene MR No Yes 0.1 mg/L Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2006 Dec 31, 2006 Nitrate MR No Yes 10 mg/L Resolved Dec 31, 2006 Nitrate Rule
Jan 1, 2006 Dec 31, 2006 Nitrate MR No Yes 10 mg/L Resolved Dec 31, 2006 Nitrate Rule
Jan 1, 2006 Dec 31, 2006 Nitrate MR No Yes 10 mg/L Resolved Dec 31, 2006 Nitrate Rule
Jan 1, 2006 Dec 31, 2006 Nitrate MR No Yes 10 mg/L Resolved Dec 31, 2006 Nitrate Rule
Jan 1, 2006 Dec 31, 2006 Nitrate MR No Yes 10 mg/L Resolved Dec 31, 2006 Nitrate Rule
Jan 1, 2006 Dec 31, 2006 Nitrate MR No Yes 10 mg/L Resolved Dec 31, 2006 Nitrate Rule
Jan 1, 2006 Dec 31, 2006 Nitrate MR No Yes 10 mg/L Resolved Dec 31, 2006 Nitrate Rule
Jan 1, 2006 Dec 31, 2006 Nitrate MR No Yes 10 mg/L Resolved Dec 31, 2006 Nitrate Rule
Aug 1, 2004 Aug 31, 2004 Coliform (TCR) MCL Yes No 5% of samples Archived Aug 31, 2004 Total Coliform Rule
Jul 1, 2003 Jul 31, 2003 Coliform (TCR) MCL Yes No 5% of samples Archived Jul 31, 2003 Total Coliform Rule
Aug 1, 1997 Aug 31, 1997 Coliform (TCR) MCL Yes No 5% of samples Archived Aug 31, 1997 Total Coliform Rule
Aug 1, 1997 Aug 31, 1997 Coliform (TCR) MCL Yes No 5% of samples Archived Aug 31, 1997 Total Coliform Rule
Aug 1, 1997 Aug 31, 1997 Coliform (TCR) MCL Yes No 5% of samples Archived Aug 31, 1997 Total Coliform Rule
Aug 1, 1996 Aug 31, 1996 Coliform (TCR) MCL Yes No 5% of samples Archived Aug 31, 1996 Total Coliform Rule
Sep 1, 1995 Sep 30, 1995 Coliform (TCR) MCL Yes No 5% of samples Archived Sep 30, 1995 Total Coliform Rule
Jul 1, 1995 Jul 31, 1995 Coliform (TCR) MCL Yes No 5% of samples Archived Jul 31, 1995 Total Coliform Rule
Oct 1, 1992 Oct 31, 1992 Coliform (TCR) MR No No 5% of samples Archived Oct 31, 1992 Total Coliform Rule
Oct 1, 1991 Oct 31, 1991 Coliform (TCR) MCL Yes No 5% of samples Archived Oct 31, 1991 Total Coliform Rule
Oct 1, 1991 Oct 31, 1991 Coliform (TCR) MR No Yes 5% of samples Archived Oct 31, 1991 Total Coliform Rule
Oct 1, 1991 Oct 31, 1991 Coliform (TCR) MCL Yes No 5% of samples Archived Oct 31, 1991 Total Coliform Rule
Oct 1, 1991 Oct 31, 1991 Coliform (TCR) MCL Yes No 5% of samples Archived Oct 31, 1991 Total Coliform Rule
Oct 1, 1979 Oct 31, 1979 Fluoride MR No No 4.0 mg/L Archived Oct 31, 1979 Inorganic Chemicals
Oct 1, 1979 Oct 31, 1979 Chromium MR No No 0.1 mg/L Archived Oct 31, 1979 Inorganic Chemicals
Oct 1, 1979 Oct 31, 1979 Arsenic MR No No 0.010 mg/L Archived Oct 31, 1979 Arsenic Rule
Oct 1, 1979 Oct 31, 1979 Cadmium MR No No 0.005 mg/L Archived Oct 31, 1979 Inorganic Chemicals
Oct 1, 1979 Oct 31, 1979 Gross Alpha, Excl. Radon and U MR No No 15 pCi/L Archived Oct 31, 1979 Radionuclides and Revised Rad 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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