ARROWHEAD WYOMING LLC

Wyoming — Transient Non-Community — PWSID: WY5600480

System Information

PWSID	WY5600480
System Name	ARROWHEAD WYOMING LLC
System Type	Transient Non-Community
Water Source	Ground Water
Activity Status	Active
Owner Type	Private
EPA Region	08
Serves School	No
Wholesaler	No
First Reported	Feb 13, 1979
Last Reported	Nov 17, 2025

Location & Contact

State	Wyoming
City	DAYTON
ZIP Code	82836
Address	P.O. Box 634
Organization	WOEHRLE, TRACEY
Phone	307-683-0111

Population & Service

Population Served	100
Service Connections	3

Drinking Water Violations (48)

This water system has 48 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
Sep 1, 2025	Sep 30, 2025	Revised Total Coliform Rule	MON	No	Yes	—	—	—	Archived	Sep 30, 2025	Revised Total Coliform Rule
Jan 1, 2024	Dec 31, 2024	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Dec 31, 2024	Nitrate Rule
Apr 1, 2019	Apr 30, 2019	Revised Total Coliform Rule	MON	No	Yes	—	—	—	Resolved	Apr 30, 2019	Revised Total Coliform Rule
Sep 8, 2018	—	Revised Total Coliform Rule	TT	Yes	No	—	—	—	Resolved	May 9, 2019	Revised Total Coliform Rule
Sep 8, 2018	—	Revised Total Coliform Rule	TT	Yes	No	—	—	—	Resolved	May 9, 2019	Revised Total Coliform Rule
Jul 1, 2018	Jul 31, 2018	Revised Total Coliform Rule	MON	No	Yes	—	—	—	Resolved	Jul 31, 2018	Revised Total Coliform Rule
Jul 1, 2018	Jul 31, 2018	Revised Total Coliform Rule	MON	No	Yes	—	—	—	Resolved	Jul 31, 2018	Revised Total Coliform Rule
Apr 25, 2018	—	Groundwater Rule	TT	Yes	No	—	—	—	Resolved	Sep 6, 2019	Ground Water Rule
Apr 25, 2018	—	Groundwater Rule	TT	Yes	No	—	—	—	Resolved	Sep 6, 2019	Ground Water Rule
Jul 21, 2017	—	E. COLI	MR	No	Yes	—	—	—	Resolved	Sep 8, 2017	Ground Water Rule
Jul 21, 2017	—	E. COLI	MR	No	Yes	—	—	—	Resolved	Sep 8, 2017	Ground Water Rule
Jul 21, 2017	—	E. COLI	MR	No	Yes	—	—	—	Resolved	Sep 8, 2017	Ground Water Rule
Jul 21, 2017	—	E. COLI	MR	No	Yes	—	—	—	Resolved	Sep 8, 2017	Ground Water Rule
Jul 21, 2017	—	E. COLI	MR	No	Yes	—	—	—	Resolved	Sep 8, 2017	Ground Water Rule
Jan 1, 2015	Mar 31, 2015	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Mar 31, 2015	Total Coliform Rule
Oct 1, 2014	Dec 31, 2014	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Dec 31, 2014	Total Coliform Rule
Dec 9, 2013	—	Groundwater Rule	TT	Yes	No	—	—	—	Resolved	Aug 23, 2014	Ground Water Rule
Dec 9, 2013	—	Groundwater Rule	TT	Yes	No	—	—	—	Resolved	Aug 23, 2014	Ground Water Rule
Dec 9, 2013	—	Groundwater Rule	TT	Yes	No	—	—	—	Resolved	Aug 23, 2014	Ground Water Rule
Nov 10, 2011	—	Groundwater Rule	Other	No	No	—	—	—	Resolved	Jun 19, 2013	Ground Water Rule
Nov 10, 2011	—	Groundwater Rule	Other	No	No	—	—	—	Resolved	Jun 19, 2013	Ground Water Rule
Sep 11, 2011	—	Groundwater Rule	Other	No	No	—	—	—	Resolved	Aug 23, 2014	Ground Water Rule
Sep 11, 2011	—	Groundwater Rule	Other	No	No	—	—	—	Resolved	Aug 23, 2014	Ground Water Rule
Apr 1, 2009	Jun 30, 2009	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 2009	Total Coliform Rule
Jul 1, 2006	Sep 30, 2006	Coliform (TCR)	MR	No	No	—	5% of samples	—	Archived	Sep 30, 2006	Total Coliform Rule
Jun 1, 2006	Jun 30, 2006	Coliform (TCR)	MR	No	No	—	5% of samples	—	Archived	Jun 30, 2006	Total Coliform Rule
Oct 1, 2004	Dec 31, 2004	Coliform (TCR)	MR	No	No	—	5% of samples	—	Archived	Dec 31, 2004	Total Coliform Rule
Jan 1, 2003	Dec 31, 2003	Nitrate	MR	No	No	—	10 mg/L	—	Resolved	Dec 31, 2003	Nitrate Rule
Jan 1, 2003	Dec 31, 2003	Nitrate	MR	No	No	—	10 mg/L	—	Resolved	Dec 31, 2003	Nitrate Rule
Apr 1, 2002	Jun 30, 2002	Coliform (TCR)	MR	No	No	—	5% of samples	—	Archived	Jun 30, 2002	Total Coliform Rule
Dec 1, 2001	Dec 31, 2001	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Dec 31, 2001	Total Coliform Rule
Dec 1, 2001	Dec 31, 2001	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Dec 31, 2001	Total Coliform Rule
Nov 1, 2001	Nov 30, 2001	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Nov 30, 2001	Total Coliform Rule
Nov 1, 2001	Nov 30, 2001	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Nov 30, 2001	Total Coliform Rule
Jul 1, 2001	Sep 30, 2001	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Sep 30, 2001	Total Coliform Rule
Jul 1, 2001	Sep 30, 2001	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Sep 30, 2001	Total Coliform Rule
Apr 1, 2001	Jun 30, 2001	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 2001	Total Coliform Rule
Apr 1, 2001	Jun 30, 2001	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 2001	Total Coliform Rule
Apr 1, 2001	Jun 30, 2001	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 2001	Total Coliform Rule
Jan 1, 2001	Mar 31, 2001	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Mar 31, 2001	Total Coliform Rule
Jan 1, 2001	Mar 31, 2001	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Mar 31, 2001	Total Coliform Rule
Jan 1, 2001	Mar 31, 2001	Coliform (TCR)	MR	No	No	—	5% of samples	—	Archived	Mar 31, 2001	Total Coliform Rule
Jan 1, 2001	Dec 31, 2001	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Dec 31, 2001	Nitrate Rule
Jan 1, 2001	Dec 31, 2001	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Dec 31, 2001	Nitrate Rule
Jan 1, 2001	Dec 31, 2001	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Dec 31, 2001	Nitrate Rule
Oct 1, 2000	Dec 31, 2000	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Dec 31, 2000	Total Coliform Rule
Oct 1, 2000	Dec 31, 2000	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Dec 31, 2000	Total Coliform Rule
Oct 1, 2000	Dec 31, 2000	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Dec 31, 2000	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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