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WINLOCK CITY OF

Washington — Community Water System — PWSID: WA5397500

System Information

PWSIDWA5397500
System NameWINLOCK 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
CityWINLOCK
ZIP Code98596
AddressPO BOX 777
OrganizationWINLOCK CITY OF
Phone—

Population & Service

Population Served3,502
Service Connections1,040

Drinking Water Violations (232)

This water system has 232 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, 2014 — Consumer Confidence Rule Other No No — — — Resolved Sep 16, 2014 Consumer Confidence Rule
Jul 1, 2012 — Consumer Confidence Rule Other No No — — — Resolved Sep 25, 2012 Consumer Confidence Rule
Jul 1, 2011 — Consumer Confidence Rule Other No No — — — Resolved Nov 2, 2011 Consumer Confidence Rule
Jun 1, 2010 Jun 30, 2010 Coliform (TCR) MR No No — 5% of samples — Resolved Jun 30, 2010 Total Coliform Rule
Apr 1, 2008 Jun 30, 2008 Vinyl chloride MR No Yes — 0.002 mg/L — Archived Jun 30, 2008 Volatile Organic Chemicals
Apr 1, 2008 Jun 30, 2008 OXAMYL MR No Yes — 0.2 mg/L — Archived Jun 30, 2008 Synthetic Organic Chemicals
Apr 1, 2008 Jun 30, 2008 Heptachlor MR No Yes — 0.0004 mg/L — Archived Jun 30, 2008 Synthetic Organic Chemicals
Apr 1, 2008 Jun 30, 2008 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Archived Jun 30, 2008 Volatile Organic Chemicals
Apr 1, 2008 Jun 30, 2008 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Archived Jun 30, 2008 Volatile Organic Chemicals
Apr 1, 2008 Jun 30, 2008 Trichloroethylene MR No Yes — 0.005 mg/L — Archived Jun 30, 2008 Volatile Organic Chemicals
Apr 1, 2008 Jun 30, 2008 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Archived Jun 30, 2008 Volatile Organic Chemicals
Apr 1, 2008 Jun 30, 2008 Chlordane MR No Yes — 0.002 mg/L — Archived Jun 30, 2008 Synthetic Organic Chemicals
Apr 1, 2008 Jun 30, 2008 Benzo(a)pyrene MR No Yes — 0.0002 mg/L — Archived Jun 30, 2008 Synthetic Organic Chemicals
Apr 1, 2008 Jun 30, 2008 Dalapon MR No Yes — 0.2 mg/L — Archived Jun 30, 2008 Synthetic Organic Chemicals
Apr 1, 2008 Jun 30, 2008 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Archived Jun 30, 2008 Volatile Organic Chemicals
Apr 1, 2008 Jun 30, 2008 Heptachlor epoxide MR No Yes — 0.0002 mg/L — Archived Jun 30, 2008 Synthetic Organic Chemicals
Apr 1, 2008 Jun 30, 2008 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Archived Jun 30, 2008 Volatile Organic Chemicals
Apr 1, 2008 Jun 30, 2008 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Archived Jun 30, 2008 Volatile Organic Chemicals
Apr 1, 2008 Jun 30, 2008 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Archived Jun 30, 2008 Volatile Organic Chemicals
Apr 1, 2008 Jun 30, 2008 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Archived Jun 30, 2008 Volatile Organic Chemicals
Apr 1, 2008 Jun 30, 2008 Carbofuran MR No Yes — 0.04 mg/L — Archived Jun 30, 2008 Synthetic Organic Chemicals
Apr 1, 2008 Jun 30, 2008 LASSO MR No Yes — — — Archived Jun 30, 2008 Synthetic Organic Chemicals
Apr 1, 2008 Jun 30, 2008 Hexachlorocyclopentadiene MR No Yes — 0.05 mg/L — Archived Jun 30, 2008 Synthetic Organic Chemicals
Apr 1, 2008 Jun 30, 2008 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Archived Jun 30, 2008 Volatile Organic Chemicals
Apr 1, 2008 Jun 30, 2008 Benzene MR No Yes — 0.005 mg/L — Archived Jun 30, 2008 Volatile Organic Chemicals
Apr 1, 2008 Jun 30, 2008 Carbon tetrachloride MR No Yes — 0.005 mg/L — Archived Jun 30, 2008 Volatile Organic Chemicals
Apr 1, 2008 Jun 30, 2008 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Archived Jun 30, 2008 Volatile Organic Chemicals
Apr 1, 2008 Jun 30, 2008 Atrazine MR No Yes — 0.003 mg/L — Archived Jun 30, 2008 Synthetic Organic Chemicals
Apr 1, 2008 Jun 30, 2008 CHLOROBENZENE MR No Yes — 0.1 mg/L — Archived Jun 30, 2008 Volatile Organic Chemicals
Apr 1, 2008 Jun 30, 2008 Di(2-ethylhexyl) phthalate MR No Yes — 0.006 mg/L — Archived Jun 30, 2008 Synthetic Organic Chemicals
Apr 1, 2008 Jun 30, 2008 2,4,5-TP MR No Yes — 0.05 mg/L — Archived Jun 30, 2008 Synthetic Organic Chemicals
Apr 1, 2008 Jun 30, 2008 BHC-GAMMA MR No Yes — 0.0002 mg/L — Archived Jun 30, 2008 Synthetic Organic Chemicals
Apr 1, 2008 Jun 30, 2008 Picloram MR No Yes — 0.5 mg/L — Archived Jun 30, 2008 Synthetic Organic Chemicals
Apr 1, 2008 Jun 30, 2008 Toxaphene MR No Yes — 0.003 mg/L — Archived Jun 30, 2008 Synthetic Organic Chemicals
Apr 1, 2008 Jun 30, 2008 Styrene MR No Yes — 0.1 mg/L — Archived Jun 30, 2008 Volatile Organic Chemicals
Apr 1, 2008 Jun 30, 2008 Aldicarb sulfoxide MR No Yes — — — Archived Jun 30, 2008 Synthetic Organic Chemicals
Apr 1, 2008 Jun 30, 2008 Di(2-ethylhexyl) adipate MR No Yes — 0.4 mg/L — Archived Jun 30, 2008 Synthetic Organic Chemicals
Apr 1, 2008 Jun 30, 2008 Endrin MR No Yes — 0.002 mg/L — Archived Jun 30, 2008 Synthetic Organic Chemicals
Apr 1, 2008 Jun 30, 2008 Toluene MR No Yes — 1 mg/L — Archived Jun 30, 2008 Volatile Organic Chemicals
Apr 1, 2008 Jun 30, 2008 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Archived Jun 30, 2008 Volatile Organic Chemicals
Apr 1, 2008 Jun 30, 2008 HEXACHLOROBENZENE MR No Yes — 0.001 mg/L — Archived Jun 30, 2008 Synthetic Organic Chemicals
Apr 1, 2008 Jun 30, 2008 Pentachlorophenol MR No Yes — 0.001 mg/L — Archived Jun 30, 2008 Synthetic Organic Chemicals
Apr 1, 2008 Jun 30, 2008 Pentachlorophenol MR No Yes — 0.001 mg/L — Archived Jun 30, 2008 Synthetic Organic Chemicals
Apr 1, 2008 Jun 30, 2008 Aldicarb MR No Yes — — — Archived Jun 30, 2008 Synthetic Organic Chemicals
Apr 1, 2008 Jun 30, 2008 Methoxychlor MR No Yes — 0.04 mg/L — Archived Jun 30, 2008 Synthetic Organic Chemicals
Apr 1, 2008 Jun 30, 2008 Tetrachloroethylene MR No Yes — 0.005 mg/L — Archived Jun 30, 2008 Volatile Organic Chemicals
Apr 1, 2008 Jun 30, 2008 Aldicarb sulfone MR No Yes — — — Archived Jun 30, 2008 Synthetic Organic Chemicals
Apr 1, 2008 Jun 30, 2008 Simazine MR No Yes — 0.004 mg/L — Archived Jun 30, 2008 Synthetic Organic Chemicals
Apr 1, 2008 Jun 30, 2008 Dinoseb MR No Yes — 0.007 mg/L — Archived Jun 30, 2008 Synthetic Organic Chemicals
Apr 1, 2008 Jun 30, 2008 Ethylbenzene MR No Yes — 0.7 mg/L — Archived Jun 30, 2008 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.

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