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ROSARIO

Washington — Community Water System — PWSID: WA5374270

System Information

PWSIDWA5374270
System NameROSARIO
System TypeCommunity Water System
Water SourceSurface Water
Activity StatusActive
Owner TypePrivate
EPA Region10
Serves SchoolNo
WholesalerYes
First ReportedFeb 7, 1981
Last ReportedDec 11, 2025

Location & Contact

StateWashington
CityTacoma
ZIP Code98444
AddressPO Box 44168
OrganizationROSARIO
Phone—

Population & Service

Population Served1,031
Service Connections246

Drinking Water Violations (49)

This water system has 49 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, 2010 Dec 31, 2010 Asbestos MR No Yes — 7 MFL — Resolved Dec 31, 2010 Inorganic Chemicals
Jul 1, 2010 Jul 31, 2010 Surface Water Treatment Rule MR No Yes — — — Resolved Jul 31, 2010 Surface Water Treatment Rule
Jul 1, 2010 Jul 31, 2010 Surface Water Treatment Rule MR No Yes — — — Resolved Jul 31, 2010 Surface Water Treatment Rule
Jul 1, 2010 Sep 30, 2010 Asbestos MR No Yes — 7 MFL — Resolved Sep 30, 2010 Inorganic Chemicals
Jun 1, 2010 — Surface Water Treatment Rule TT Yes No — — — Resolved Aug 2, 2010 Surface Water Treatment Rule
Jun 1, 2010 — Surface Water Treatment Rule TT Yes No — — — Resolved Aug 2, 2010 Surface Water Treatment Rule
Oct 1, 2008 Oct 31, 2008 Surface Water Treatment Rule TT Yes No — — — Archived Oct 31, 2008 Surface Water Treatment Rule
Jun 1, 2005 Jun 30, 2005 Surface Water Treatment Rule TT Yes No — — — Archived Jun 30, 2005 Surface Water Treatment Rule
Jan 1, 2004 Dec 31, 2004 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Styrene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Toluene MR No Yes — 1 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Tetrachloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 CHLOROBENZENE MR No Yes — 0.1 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Benzene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jul 1, 1999 Aug 1, 1999 Surface Water Treatment Rule TT Yes No — — — Archived Aug 1, 1999 Surface Water Treatment Rule
Aug 1, 1994 Aug 31, 1994 Surface Water Treatment Rule MR No Yes — — — Archived Aug 31, 1994 Surface Water Treatment Rule
Jul 1, 1994 Jul 31, 1994 Surface Water Treatment Rule MR No Yes — — — Archived Jul 31, 1994 Surface Water Treatment Rule
Jun 1, 1994 Jun 30, 1994 Surface Water Treatment Rule MR No Yes — — — Archived Jun 30, 1994 Surface Water Treatment Rule
May 1, 1994 May 31, 1994 Surface Water Treatment Rule MR No Yes — — — Archived May 31, 1994 Surface Water Treatment Rule
Apr 1, 1994 Apr 30, 1994 Surface Water Treatment Rule MR No Yes — — — Archived Apr 30, 1994 Surface Water Treatment Rule
Mar 1, 1994 Mar 31, 1994 Surface Water Treatment Rule MR No Yes — — — Archived Mar 31, 1994 Surface Water Treatment Rule
Feb 1, 1994 Feb 28, 1994 Surface Water Treatment Rule MR No Yes — — — Archived Feb 28, 1994 Surface Water Treatment Rule
Jan 1, 1994 Jan 31, 1994 Surface Water Treatment Rule MR No Yes — — — Archived Jan 31, 1994 Surface Water Treatment Rule
May 1, 1992 May 31, 1992 Coliform (TCR) MR No Yes — 5% of samples — Archived May 31, 1992 Total Coliform Rule
May 1, 1992 May 31, 1992 Coliform (TCR) MR No Yes — 5% of samples — Archived May 31, 1992 Total Coliform Rule
Feb 1, 1992 Feb 29, 1992 Coliform (TCR) MR No Yes — 5% of samples — Archived Feb 29, 1992 Total Coliform Rule
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 Barium MR No No — 2 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
Oct 1, 1979 Oct 31, 1979 Mercury MR No No — 0.002 mg/L — Archived Oct 31, 1979 Inorganic Chemicals
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 Cadmium MR No No — 0.005 mg/L — Archived Oct 31, 1979 Inorganic Chemicals
Oct 1, 1979 Oct 31, 1979 Nitrate MR No No — 10 mg/L — Archived Oct 31, 1979 Nitrate Rule
Oct 1, 1979 Oct 31, 1979 Selenium MR No No — 0.05 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

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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