ST JOHN TOWN OF

Washington — Community Water System — PWSID: WA5375300

System Information

PWSID	WA5375300
System Name	ST JOHN TOWN OF
System Type	Community Water System
Water Source	Ground Water
Activity Status	Active
Owner Type	Local
EPA Region	10
Serves School	No
Wholesaler	No
First Reported	Feb 7, 1981
Last Reported	Dec 11, 2025

Location & Contact

State	Washington
City	Washtucna
ZIP Code	99371
Address	165 SE Main St
Organization	ST JOHN TOWN OF
Phone	—

Population & Service

Population Served	800
Service Connections	320

Drinking Water Violations (42)

This water system has 42 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, 2024	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Aug 27, 2024	Consumer Confidence Rule
Jul 1, 2023	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Sep 29, 2023	Consumer Confidence Rule
Oct 1, 2022	Oct 31, 2022	Revised Total Coliform Rule	MON	No	Yes	—	—	—	Resolved	Oct 31, 2022	Revised Total Coliform Rule
Jan 1, 2018	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Sep 29, 2021	Lead and Copper Rule
Jan 1, 2018	Dec 31, 2018	Total Haloacetic Acids (HAA5)	MR	No	Yes	—	0.060 mg/L	—	Resolved	Dec 31, 2018	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2018	Dec 31, 2018	TTHM	MR	No	Yes	—	0.080 mg/L	—	Resolved	Dec 31, 2018	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2017	Dec 31, 2017	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2017	Nitrate Rule
Jan 1, 2014	Dec 31, 2016	Cadmium	MR	No	Yes	—	0.005 mg/L	—	Resolved	Dec 31, 2016	Inorganic Chemicals
Jan 1, 2014	Dec 31, 2016	Nickel	MR	No	Yes	—	—	—	Resolved	Dec 31, 2016	Inorganic Chemicals
Jan 1, 2014	Dec 31, 2016	CYANIDE	MR	No	Yes	—	0.2 mg/L	—	Resolved	Dec 31, 2016	Inorganic Chemicals
Jan 1, 2014	Dec 31, 2016	Nitrite	MR	No	Yes	—	1 mg/L	—	Resolved	Dec 31, 2016	Nitrate Rule
Jan 1, 2014	Dec 31, 2016	Fluoride	MR	No	Yes	—	4.0 mg/L	—	Resolved	Dec 31, 2016	Inorganic Chemicals
Jan 1, 2014	Dec 31, 2016	Mercury	MR	No	Yes	—	0.002 mg/L	—	Resolved	Dec 31, 2016	Inorganic Chemicals
Jan 1, 2014	Dec 31, 2016	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Dec 31, 2016	Arsenic Rule
Jan 1, 2014	Dec 31, 2016	Barium	MR	No	Yes	—	2 mg/L	—	Resolved	Dec 31, 2016	Inorganic Chemicals
Jan 1, 2014	Dec 31, 2016	Chromium	MR	No	Yes	—	0.1 mg/L	—	Resolved	Dec 31, 2016	Inorganic Chemicals
Jan 1, 2014	Dec 31, 2016	Selenium	MR	No	Yes	—	0.05 mg/L	—	Resolved	Dec 31, 2016	Inorganic Chemicals
Jan 1, 2014	Dec 31, 2016	Antimony, Total	MR	No	Yes	—	0.006 mg/L	—	Resolved	Dec 31, 2016	Inorganic Chemicals
Jan 1, 2014	Dec 31, 2016	Beryllium, Total	MR	No	Yes	—	0.004 mg/L	—	Resolved	Dec 31, 2016	Inorganic Chemicals
Jan 1, 2014	Dec 31, 2016	Thallium, Total	MR	No	Yes	—	0.002 mg/L	—	Resolved	Dec 31, 2016	Inorganic Chemicals
Jun 1, 2006	Jun 30, 2006	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Jun 30, 2006	Total Coliform Rule
Jan 1, 2006	Dec 31, 2006	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2006	Nitrate Rule
Jan 1, 2006	Dec 31, 2006	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2006	Nitrate Rule
Jan 1, 2006	Dec 31, 2006	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2006	Nitrate Rule
Jan 1, 2006	Dec 31, 2006	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2006	Nitrate Rule
Jan 1, 2006	Dec 31, 2006	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2006	Nitrate Rule
Jan 1, 2006	Dec 31, 2006	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2006	Nitrate Rule
Jan 1, 2006	Dec 31, 2006	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2006	Nitrate Rule
Jan 1, 2006	Dec 31, 2006	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2006	Nitrate Rule
Apr 1, 1996	Apr 30, 1996	Coliform (TCR)	MR	No	Yes	—	5% of samples	—	Archived	Apr 30, 1996	Total Coliform Rule
Aug 1, 1994	Aug 31, 1994	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Aug 31, 1994	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
Nov 1, 1992	Nov 30, 1992	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Nov 30, 1992	Total Coliform Rule
Nov 1, 1992	Nov 30, 1992	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Nov 30, 1992	Total Coliform Rule
Oct 1, 1992	Oct 31, 1992	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Oct 31, 1992	Total Coliform Rule
Oct 1, 1992	Oct 31, 1992	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Oct 31, 1992	Total Coliform Rule
Sep 1, 1992	Sep 30, 1992	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Sep 30, 1992	Total Coliform Rule
Sep 1, 1992	Sep 30, 1992	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Sep 30, 1992	Total Coliform Rule
Sep 1, 1992	Sep 30, 1992	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Sep 30, 1992	Total Coliform Rule
Sep 1, 1992	Sep 30, 1992	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Sep 30, 1992	Total Coliform Rule
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

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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