WINLOCK HIGH SCHOOL

Washington — Non-Transient Non-Community — PWSID: WA5356555

System Information

PWSID	WA5356555
System Name	WINLOCK HIGH SCHOOL
System Type	Non-Transient Non-Community
Water Source	Ground Water
Activity Status	Active
Owner Type	Local
EPA Region	10
Serves School	Yes
Wholesaler	No
First Reported	Feb 7, 1981
Last Reported	Dec 11, 2025

Location & Contact

State	Washington
City	WInlock
ZIP Code	98596
Address	PO Box 128
Organization	WINLOCK HIGH SCHOOL
Phone	—

Population & Service

Population Served	400
Service Connections	3

Drinking Water Violations (30)

This water system has 30 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
Jan 1, 2020	Dec 31, 2020	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2020	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, 2007	Dec 31, 2007	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2007	Nitrate Rule
Jan 1, 2006	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Dec 31, 2006	Lead and Copper Rule
Jan 1, 2006	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Dec 31, 2006	Lead and Copper Rule
Jan 1, 2006	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Dec 31, 2006	Lead and Copper Rule
Jan 1, 2006	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Dec 31, 2006	Lead and Copper Rule
Jan 1, 2006	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Dec 31, 2006	Lead and Copper Rule
Jan 1, 2006	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Dec 31, 2006	Lead and Copper Rule
Jan 1, 2006	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Dec 31, 2006	Lead and Copper Rule
Jan 1, 2006	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Dec 31, 2006	Lead and Copper Rule
Jan 1, 2006	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Dec 31, 2006	Lead and Copper Rule
Jan 1, 2006	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Dec 31, 2006	Lead and Copper Rule
Jan 1, 2006	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Dec 31, 2006	Lead and Copper Rule
Mar 1, 2000	Mar 31, 2000	Coliform (TCR)	MR	No	Yes	—	5% of samples	—	Archived	Mar 31, 2000	Total Coliform Rule
Mar 1, 1996	Mar 31, 1996	Coliform (TCR)	MR	No	Yes	—	5% of samples	—	Archived	Mar 31, 1996	Total Coliform Rule
Dec 1, 1993	Dec 31, 1993	Coliform (TCR)	MR	No	Yes	—	5% of samples	—	Archived	Dec 31, 1993	Total Coliform Rule
Jan 1, 1992	Jan 31, 1992	Coliform (TCR)	MR	No	No	—	5% of samples	—	Archived	Jan 31, 1992	Total Coliform Rule
Dec 1, 1991	Dec 31, 1991	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Dec 31, 1991	Total Coliform Rule
Dec 1, 1991	Dec 31, 1991	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Dec 31, 1991	Total Coliform Rule
Dec 1, 1991	Dec 31, 1991	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Dec 31, 1991	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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