VISTAS INC

Washington — Community Water System — PWSID: WA5358144

System Information

PWSIDWA5358144
System NameVISTAS INC
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypePrivate
EPA Region10
Serves SchoolNo
WholesalerYes
First ReportedSep 13, 1989
Last ReportedDec 11, 2025

Location & Contact

StateWashington
CitySEQUIM
ZIP Code98382
AddressPO BOX 92
OrganizationVISTAS INC
Phone

Population & Service

Population Served241
Service Connections124

Drinking Water Violations (333)

This water system has 333 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, 2025 Consumer Confidence Rule Other No No Resolved Sep 28, 2025 Consumer Confidence Rule
Oct 1, 2018 Revised Total Coliform Rule TT Yes No Resolved Jan 29, 2019 Revised Total Coliform Rule
Sep 1, 2018 Sep 30, 2018 Revised Total Coliform Rule MON No Yes Resolved Sep 30, 2018 Revised Total Coliform Rule
Jul 1, 2018 Consumer Confidence Rule Other No No Resolved Oct 2, 2018 Consumer Confidence Rule
Jan 1, 2018 Dec 31, 2018 Nitrate MR No Yes 10 mg/L Resolved Dec 31, 2018 Nitrate Rule
Jan 1, 2018 Dec 31, 2018 Nitrate MR No Yes 10 mg/L Resolved Dec 31, 2018 Nitrate Rule
Jul 1, 2016 Consumer Confidence Rule Other No No Resolved Jan 6, 2017 Consumer Confidence 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, 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
Jul 1, 2014 Consumer Confidence Rule Other No No Resolved Dec 12, 2014 Consumer Confidence 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
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 Total Haloacetic Acids (HAA5) MR No Yes 0.060 mg/L Resolved Dec 31, 2014 Stage 2 Disinfectants and Disinfection Byproducts 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 TTHM MR No Yes 0.080 mg/L Resolved Dec 31, 2014 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2013 Consumer Confidence Rule Other No No Resolved Oct 24, 2013 Consumer Confidence Rule
Jan 1, 2012 Dec 31, 2012 Nitrate MR No Yes 10 mg/L Resolved Dec 31, 2012 Nitrate Rule
Jan 1, 2012 Dec 31, 2012 Nitrate MR No Yes 10 mg/L Resolved Dec 31, 2012 Nitrate Rule
Jan 1, 2012 Dec 31, 2012 Nitrate MR No Yes 10 mg/L Resolved Dec 31, 2012 Nitrate Rule
Jan 1, 2012 Dec 31, 2012 Nitrate MR No Yes 10 mg/L Resolved Dec 31, 2012 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
Jan 1, 2008 Dec 31, 2010 Heptachlor MR No Yes 0.0004 mg/L Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Atrazine MR No Yes 0.003 mg/L Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Di(2-ethylhexyl) phthalate MR No Yes 0.006 mg/L Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Heptachlor epoxide MR No Yes 0.0002 mg/L Resolved Dec 31, 2010 Synthetic 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 Endrin MR No Yes 0.002 mg/L Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Atrazine MR No Yes 0.003 mg/L Resolved Dec 31, 2010 Synthetic 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 1,1,1-Trichloroethane MR No Yes 0.2 mg/L Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2008 Dec 31, 2010 HEXACHLOROBENZENE MR No Yes 0.001 mg/L Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Endrin MR No Yes 0.002 mg/L Resolved Dec 31, 2010 Synthetic 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 Simazine MR No Yes 0.004 mg/L Resolved Dec 31, 2010 Synthetic 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 Chlordane MR No Yes 0.002 mg/L Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Hexachlorocyclopentadiene MR No Yes 0.05 mg/L Resolved Dec 31, 2010 Synthetic 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 Dinoseb MR No Yes 0.007 mg/L Resolved Dec 31, 2010 Synthetic 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 Benzo(a)pyrene MR No Yes 0.0002 mg/L Resolved Dec 31, 2010 Synthetic 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 Picloram MR No Yes 0.5 mg/L Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 LASSO MR No Yes Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Heptachlor MR No Yes 0.0004 mg/L Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Toluene MR No Yes 1 mg/L Resolved Dec 31, 2010 Volatile Organic 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.

Browse All Water Systems Water Systems in Washington