SEVEN DAY WEEKEND

Montana — Transient Non-Community — PWSID: MT0001409

System Information

PWSID	MT0001409
System Name	SEVEN DAY WEEKEND
System Type	Transient Non-Community
Water Source	Ground Water
Activity Status	Non-Inventory
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	HOBSON
ZIP Code	59452
Address	PO BOX 317
Organization	HULL, HEATHER
Phone	406-423-5482

Population & Service

Population Served	81
Service Connections	3

Drinking Water Violations (150)

This water system has 150 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, 2017	Mar 31, 2017	Revised Total Coliform Rule	MON	No	Yes	—	—	—	Resolved	Mar 31, 2017	Revised Total Coliform Rule
Jan 1, 2017	Mar 31, 2017	Revised Total Coliform Rule	MON	No	Yes	—	—	—	Resolved	Mar 31, 2017	Revised Total Coliform Rule
Jan 1, 2017	Mar 31, 2017	Revised Total Coliform Rule	MON	No	Yes	—	—	—	Resolved	Mar 31, 2017	Revised Total Coliform Rule
Jan 1, 2017	Mar 31, 2017	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Mar 31, 2017	Nitrate Rule
Jan 1, 2017	Mar 31, 2017	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Mar 31, 2017	Nitrate Rule
Jan 1, 2017	Mar 31, 2017	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Mar 31, 2017	Nitrate Rule
Oct 1, 2016	Dec 31, 2016	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Dec 31, 2016	Nitrate Rule
Oct 1, 2016	Dec 31, 2016	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Dec 31, 2016	Nitrate Rule
Oct 1, 2016	Dec 31, 2016	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Dec 31, 2016	Nitrate Rule
Oct 1, 2016	Dec 31, 2016	Revised Total Coliform Rule	MON	No	Yes	—	—	—	Resolved	Dec 31, 2016	Revised Total Coliform Rule
Oct 1, 2016	Dec 31, 2016	Revised Total Coliform Rule	MON	No	Yes	—	—	—	Resolved	Dec 31, 2016	Revised Total Coliform Rule
Oct 1, 2016	Dec 31, 2016	Revised Total Coliform Rule	MON	No	Yes	—	—	—	Resolved	Dec 31, 2016	Revised Total Coliform Rule
Jul 1, 2016	Sep 30, 2016	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Sep 30, 2016	Nitrate Rule
Jul 1, 2016	Sep 30, 2016	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Sep 30, 2016	Nitrate Rule
Jul 1, 2016	Sep 30, 2016	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Sep 30, 2016	Nitrate Rule
Apr 2, 2016	—	Revised Total Coliform Rule	Other	No	No	—	—	—	Resolved	May 15, 2017	Revised Total Coliform Rule
Apr 2, 2016	—	Revised Total Coliform Rule	Other	No	No	—	—	—	Resolved	May 15, 2017	Revised Total Coliform Rule
Apr 2, 2016	—	Revised Total Coliform Rule	Other	No	No	—	—	—	Resolved	May 15, 2017	Revised Total Coliform Rule
Apr 1, 2016	Jun 30, 2016	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Jun 30, 2016	Nitrate Rule
Apr 1, 2016	Jun 30, 2016	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Jun 30, 2016	Nitrate Rule
Apr 1, 2016	Jun 30, 2016	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Jun 30, 2016	Nitrate Rule
Oct 1, 2015	Dec 31, 2015	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Dec 31, 2015	Total Coliform Rule
Oct 1, 2015	Dec 31, 2015	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Dec 31, 2015	Total Coliform Rule
Oct 1, 2015	Dec 31, 2015	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Dec 31, 2015	Total Coliform Rule
Oct 1, 2009	Dec 31, 2009	Nitrate-Nitrite	MCL	Yes	No	13.6 MG/L	—	—	Resolved	Dec 31, 2009	Nitrate Rule
Oct 1, 2009	Dec 31, 2009	Nitrate-Nitrite	MCL	Yes	No	13.6 MG/L	—	—	Resolved	Dec 31, 2009	Nitrate Rule
Oct 1, 2009	Dec 31, 2009	Nitrate-Nitrite	MCL	Yes	No	13.6 MG/L	—	—	Resolved	Dec 31, 2009	Nitrate Rule
Oct 1, 2009	Dec 31, 2009	Nitrate-Nitrite	MCL	Yes	No	13.6 MG/L	—	—	Resolved	Dec 31, 2009	Nitrate Rule
Oct 1, 2009	Dec 31, 2009	Nitrate-Nitrite	MCL	Yes	No	13.6 MG/L	—	—	Resolved	Dec 31, 2009	Nitrate Rule
Oct 1, 2009	Dec 31, 2009	Nitrate-Nitrite	MCL	Yes	No	13.6 MG/L	—	—	Resolved	Dec 31, 2009	Nitrate Rule
Jul 1, 2009	Sep 30, 2009	Nitrate-Nitrite	MCL	Yes	No	11.3 MG/L	—	—	Resolved	Sep 30, 2009	Nitrate Rule
Jul 1, 2009	Sep 30, 2009	Nitrate-Nitrite	MCL	Yes	No	11.3 MG/L	—	—	Resolved	Sep 30, 2009	Nitrate Rule
Jul 1, 2009	Sep 30, 2009	Nitrate-Nitrite	MCL	Yes	No	11.3 MG/L	—	—	Resolved	Sep 30, 2009	Nitrate Rule
Jul 1, 2009	Sep 30, 2009	Nitrate-Nitrite	MCL	Yes	No	11.3 MG/L	—	—	Resolved	Sep 30, 2009	Nitrate Rule
Jul 1, 2009	Sep 30, 2009	Nitrate-Nitrite	MCL	Yes	No	11.3 MG/L	—	—	Resolved	Sep 30, 2009	Nitrate Rule
Jul 1, 2009	Sep 30, 2009	Nitrate-Nitrite	MCL	Yes	No	11.3 MG/L	—	—	Resolved	Sep 30, 2009	Nitrate Rule
Apr 1, 2008	Jun 30, 2008	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Jun 30, 2008	Nitrate Rule
Apr 1, 2008	Jun 30, 2008	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Jun 30, 2008	Nitrate Rule
Apr 1, 2008	Jun 30, 2008	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Jun 30, 2008	Nitrate Rule
Apr 1, 2008	Jun 30, 2008	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Jun 30, 2008	Nitrate Rule
Apr 1, 2008	Jun 30, 2008	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Jun 30, 2008	Nitrate Rule
Jan 1, 2008	Mar 31, 2008	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Mar 31, 2008	Nitrate Rule
Jan 1, 2008	Mar 31, 2008	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Mar 31, 2008	Nitrate Rule
Jan 1, 2008	Mar 31, 2008	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Mar 31, 2008	Nitrate Rule
Jan 1, 2008	Mar 31, 2008	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Mar 31, 2008	Nitrate Rule
Jan 1, 2008	Mar 31, 2008	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Mar 31, 2008	Nitrate Rule
Oct 1, 2007	Dec 31, 2007	Nitrate-Nitrite	MCL	Yes	No	14 MG/L	—	10	Resolved	Dec 31, 2007	Nitrate Rule
Oct 1, 2007	Dec 31, 2007	Nitrate-Nitrite	MCL	Yes	No	14 MG/L	—	10	Resolved	Dec 31, 2007	Nitrate Rule
Oct 1, 2007	Dec 31, 2007	Nitrate-Nitrite	MCL	Yes	No	14 MG/L	—	10	Resolved	Dec 31, 2007	Nitrate Rule
Oct 1, 2007	Dec 31, 2007	Nitrate-Nitrite	MCL	Yes	No	14 MG/L	—	10	Resolved	Dec 31, 2007	Nitrate 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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