PIONEER SCHOOL DISTRICT

Washington — Non-Transient Non-Community — PWSID: WA5367723

System Information

PWSID	WA5367723
System Name	PIONEER SCHOOL DISTRICT
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	Shelton
ZIP Code	98584-5034
Address	PO Box 2026
Organization	PIONEER SCHOOL DISTRICT
Phone	—

Population & Service

Population Served	903
Service Connections	2

Drinking Water Violations (39)

This water system has 39 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, 2023	Dec 31, 2023	TTHM	MR	No	Yes	—	0.080 mg/L	—	Resolved	Dec 31, 2023	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023	Dec 31, 2023	Total Haloacetic Acids (HAA5)	MR	No	Yes	—	0.060 mg/L	—	Resolved	Dec 31, 2023	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2020	Dec 31, 2020	TTHM	MR	No	Yes	—	0.080 mg/L	—	Resolved	Dec 31, 2020	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2020	Dec 31, 2020	Total Haloacetic Acids (HAA5)	MR	No	Yes	—	0.060 mg/L	—	Resolved	Dec 31, 2020	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2019	Dec 31, 2019	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2019	Nitrate Rule
Jan 1, 2017	Dec 31, 2017	TTHM	MR	No	Yes	—	0.080 mg/L	—	Resolved	Dec 31, 2017	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2017	Dec 31, 2017	Total Haloacetic Acids (HAA5)	MR	No	Yes	—	0.060 mg/L	—	Resolved	Dec 31, 2017	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2016	Dec 31, 2016	TTHM	MR	No	Yes	—	0.080 mg/L	—	Resolved	Dec 31, 2016	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2016	Dec 31, 2016	Total Haloacetic Acids (HAA5)	MR	No	Yes	—	0.060 mg/L	—	Resolved	Dec 31, 2016	Stage 2 Disinfectants and Disinfection Byproducts 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	TTHM	MR	No	Yes	—	0.080 mg/L	—	Resolved	Dec 31, 2014	Stage 2 Disinfectants and Disinfection Byproducts Rule
Sep 1, 1999	Sep 30, 1999	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Sep 30, 1999	Total Coliform Rule
Sep 1, 1999	Sep 30, 1999	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Sep 30, 1999	Total Coliform Rule
Sep 1, 1999	Sep 30, 1999	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Sep 30, 1999	Total Coliform Rule
Dec 1, 1998	Dec 31, 1998	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Dec 31, 1998	Total Coliform Rule
Dec 1, 1998	Dec 31, 1998	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Dec 31, 1998	Total Coliform Rule
Dec 1, 1998	Dec 31, 1998	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Dec 31, 1998	Total Coliform Rule
Oct 1, 1997	Oct 31, 1997	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Oct 31, 1997	Total Coliform Rule
Oct 1, 1997	Oct 31, 1997	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Oct 31, 1997	Total Coliform Rule
Oct 1, 1997	Oct 31, 1997	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Oct 31, 1997	Total Coliform Rule
Nov 1, 1996	Nov 30, 1996	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Nov 30, 1996	Total Coliform Rule
Nov 1, 1996	Nov 30, 1996	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Nov 30, 1996	Total Coliform Rule
Nov 1, 1996	Nov 30, 1996	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Nov 30, 1996	Total Coliform Rule
Sep 1, 1996	Sep 30, 1996	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Sep 30, 1996	Total Coliform Rule
Sep 1, 1994	Sep 30, 1994	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Sep 30, 1994	Total Coliform Rule
Dec 1, 1993	Dec 31, 1993	Coliform (TCR)	MR	No	Yes	—	5% of samples	—	Archived	Dec 31, 1993	Total Coliform Rule
Dec 1, 1993	Dec 31, 1993	Coliform (TCR)	MR	No	Yes	—	5% of samples	—	Archived	Dec 31, 1993	Total Coliform Rule
Nov 1, 1993	Nov 30, 1993	Coliform (TCR)	MR	No	Yes	—	5% of samples	—	Archived	Nov 30, 1993	Total Coliform Rule
Nov 1, 1993	Nov 30, 1993	Coliform (TCR)	MR	No	Yes	—	5% of samples	—	Archived	Nov 30, 1993	Total Coliform Rule
Feb 1, 1993	Feb 28, 1993	Coliform (TCR)	MR	No	Yes	—	5% of samples	—	Archived	Feb 28, 1993	Total Coliform Rule
Feb 1, 1993	Feb 28, 1993	Coliform (TCR)	MR	No	Yes	—	5% of samples	—	Archived	Feb 28, 1993	Total Coliform Rule
Jan 1, 1993	Jan 31, 1993	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Jan 31, 1993	Total Coliform Rule
Jan 1, 1993	Jan 31, 1993	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Jan 31, 1993	Total Coliform Rule
Mar 1, 1992	Mar 31, 1992	Coliform (TCR)	MR	No	Yes	—	5% of samples	—	Archived	Mar 31, 1992	Total Coliform Rule
Mar 1, 1992	Mar 31, 1992	Coliform (TCR)	MR	No	Yes	—	5% of samples	—	Archived	Mar 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
Feb 1, 1992	Feb 29, 1992	Coliform (TCR)	MR	No	Yes	—	5% of samples	—	Archived	Feb 29, 1992	Total Coliform Rule
Dec 1, 1991	Dec 31, 1991	Coliform (TCR)	MR	No	Yes	—	5% of samples	—	Archived	Dec 31, 1991	Total Coliform Rule
Nov 1, 1991	Nov 30, 1991	Coliform (TCR)	MR	No	Yes	—	5% of samples	—	Archived	Nov 30, 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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