AP WILLIAMS

Montana — Community Water System — PWSID: MT0001671

System Information

PWSID	MT0001671
System Name	AP WILLIAMS
System Type	Community Water System
Water Source	Ground Water
Activity Status	Active
Owner Type	Private
EPA Region	08
Serves School	No
Wholesaler	No
First Reported	Mar 5, 1980
Last Reported	Jan 5, 2026

Location & Contact

State	Montana
City	KALISPELL
ZIP Code	59903
Address	PO BOX 1139
Organization	WILLIAMS LLC, AP
Phone	406-393-2127

Population & Service

Population Served	280
Service Connections	54

Drinking Water Violations (29)

This water system has 29 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, 2022	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Jul 6, 2022	Consumer Confidence Rule
Jul 1, 2022	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Jul 6, 2022	Consumer Confidence Rule
Aug 1, 2019	Aug 31, 2019	Revised Total Coliform Rule	MON	No	Yes	—	—	—	Resolved	Aug 31, 2019	Revised Total Coliform Rule
Aug 1, 2019	Aug 31, 2019	Revised Total Coliform Rule	MON	No	Yes	—	—	—	Resolved	Aug 31, 2019	Revised Total Coliform Rule
Aug 1, 2019	Aug 31, 2019	Revised Total Coliform Rule	MON	No	Yes	—	—	—	Resolved	Aug 31, 2019	Revised Total Coliform Rule
Aug 1, 2019	Aug 31, 2019	Revised Total Coliform Rule	MON	No	Yes	—	—	—	Resolved	Aug 31, 2019	Revised Total Coliform Rule
Jan 1, 2003	Dec 31, 2003	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Dec 31, 2003	Nitrate Rule
Jan 1, 2003	Dec 31, 2003	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Dec 31, 2003	Nitrate Rule
Jan 1, 2003	Dec 31, 2003	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Dec 31, 2003	Nitrate Rule
Jan 1, 2003	Dec 31, 2003	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Dec 31, 2003	Nitrate Rule
Dec 1, 2000	Dec 31, 2000	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Dec 31, 2000	Total Coliform Rule
Dec 1, 2000	Dec 31, 2000	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Dec 31, 2000	Total Coliform Rule
Dec 1, 2000	Dec 31, 2000	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Dec 31, 2000	Total Coliform Rule
Jul 1, 1997	Jul 31, 1997	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jul 31, 1997	Total Coliform Rule
Jan 1, 1996	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Dec 31, 2000	Lead and Copper Rule
Jun 1, 1994	Jun 30, 1994	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 1994	Total Coliform Rule
Jul 1, 1993	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Dec 3, 1996	Lead and Copper Rule
Jul 1, 1993	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Dec 3, 1996	Lead and Copper Rule
Aug 1, 1992	Aug 31, 1992	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Aug 31, 1992	Total Coliform Rule
Jul 1, 1992	Jul 31, 1992	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jul 31, 1992	Total Coliform Rule
May 1, 1992	May 31, 1992	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	May 31, 1992	Total Coliform Rule
May 1, 1992	May 31, 1992	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	May 31, 1992	Total Coliform Rule
Oct 1, 1981	Sep 30, 1982	Barium	MR	No	Yes	—	2 mg/L	—	Archived	Sep 30, 1982	Inorganic Chemicals
Jun 24, 1981	Jul 23, 1981	Mercury	MR	No	Yes	—	0.002 mg/L	—	Archived	Jul 23, 1981	Inorganic Chemicals
—	—		—	No	No	—	—	—	—	—	—
—	—		—	No	No	—	—	—	—	—	—
—	—		—	No	No	—	—	—	—	—	—
—	—		—	No	No	—	—	—	—	—	—
—	—		—	No	No	—	—	—	—	—	—

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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