TRIANGLE C RANCH

Wyoming — Transient Non-Community — PWSID: WY5600400

System Information

PWSID	WY5600400
System Name	TRIANGLE C RANCH
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	DUBOIS
ZIP Code	82513
Address	3737 Highway 26
Organization	PARK, LORRI
Phone	307-455-2225

Population & Service

Population Served	67
Service Connections	14

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
Jul 9, 2025	—	E. COLI	MR	No	Yes	—	—	—	Resolved	Jul 14, 2025	Ground Water Rule
Jun 1, 2024	—	Revised Total Coliform Rule	TT	Yes	No	—	—	—	Resolved	Jul 21, 2024	Revised Total Coliform Rule
Jun 1, 2019	—	Revised Total Coliform Rule	TT	Yes	No	—	—	—	Resolved	May 22, 2020	Revised Total Coliform Rule
Jun 1, 2019	—	Revised Total Coliform Rule	TT	Yes	No	—	—	—	Resolved	May 22, 2020	Revised Total Coliform Rule
Jun 1, 2019	—	Revised Total Coliform Rule	TT	Yes	No	—	—	—	Resolved	May 22, 2020	Revised Total Coliform Rule
Jun 1, 2018	—	Revised Total Coliform Rule	TT	Yes	No	—	—	—	Resolved	May 6, 2020	Revised Total Coliform Rule
Jun 1, 2018	—	Revised Total Coliform Rule	TT	Yes	No	—	—	—	Resolved	May 6, 2020	Revised Total Coliform Rule
Jun 1, 2018	—	Revised Total Coliform Rule	TT	Yes	No	—	—	—	Resolved	May 6, 2020	Revised Total Coliform Rule
Jan 1, 2017	—	Revised Total Coliform Rule	TT	Yes	No	—	—	—	Resolved	May 3, 2017	Revised Total Coliform Rule
Jan 1, 2017	—	Revised Total Coliform Rule	TT	Yes	No	—	—	—	Resolved	May 3, 2017	Revised Total Coliform Rule
Jan 1, 2017	—	Revised Total Coliform Rule	TT	Yes	No	—	—	—	Resolved	May 3, 2017	Revised Total Coliform Rule
Jan 1, 2017	—	Revised Total Coliform Rule	TT	Yes	No	—	—	—	Resolved	May 3, 2017	Revised Total Coliform Rule
Jul 1, 2015	Sep 30, 2015	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Sep 30, 2015	Total Coliform Rule
Oct 1, 2012	Dec 31, 2012	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Dec 31, 2012	Total Coliform Rule
Oct 1, 2012	Dec 31, 2012	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Dec 31, 2012	Total Coliform Rule
Jul 1, 2012	Sep 30, 2012	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Sep 30, 2012	Total Coliform Rule
Jul 1, 2012	Sep 30, 2012	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Sep 30, 2012	Total Coliform Rule
Apr 1, 2012	Jun 30, 2012	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 2012	Total Coliform Rule
Apr 1, 2012	Jun 30, 2012	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 2012	Total Coliform Rule
Jan 1, 2012	Dec 31, 2012	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Dec 31, 2012	Nitrate Rule
Jan 1, 2012	Dec 31, 2012	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Dec 31, 2012	Nitrate Rule
Jan 1, 2012	Dec 31, 2012	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Dec 31, 2012	Nitrate Rule
Oct 1, 2011	Dec 31, 2011	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Dec 31, 2011	Total Coliform Rule
Oct 1, 2011	Dec 31, 2011	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Dec 31, 2011	Total Coliform Rule
Oct 1, 2011	Dec 31, 2011	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Dec 31, 2011	Total Coliform Rule
Oct 1, 2011	Dec 31, 2011	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Dec 31, 2011	Total Coliform Rule
Apr 1, 2011	Jun 30, 2011	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 2011	Total Coliform Rule
Apr 1, 2011	Jun 30, 2011	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 2011	Total Coliform Rule
Apr 1, 2011	Jun 30, 2011	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 2011	Total Coliform Rule
Apr 1, 2011	Jun 30, 2011	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 2011	Total Coliform Rule
Jul 1, 2010	Sep 30, 2010	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Sep 30, 2010	Total Coliform Rule
Jul 1, 2010	Sep 30, 2010	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Sep 30, 2010	Total Coliform Rule
Jan 1, 2010	Dec 31, 2010	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2010	Nitrate Rule
Jan 1, 2010	Dec 31, 2010	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2010	Nitrate Rule
Jan 1, 2010	Dec 31, 2010	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2010	Nitrate Rule
Jan 1, 2005	Dec 31, 2005	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2005	Nitrate Rule
Jan 1, 2005	Dec 31, 2005	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2005	Nitrate Rule
Jan 1, 2005	Dec 31, 2005	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2005	Nitrate Rule
Jan 1, 2004	Dec 31, 2004	Nitrate	MR	No	No	—	10 mg/L	—	Resolved	Apr 12, 2004	Nitrate Rule
Jan 1, 2004	Dec 31, 2004	Nitrate	MR	No	No	—	10 mg/L	—	Resolved	Apr 12, 2004	Nitrate Rule
Oct 1, 2003	Dec 31, 2003	Coliform (TCR)	MR	No	No	—	5% of samples	—	Archived	Dec 31, 2003	Total Coliform Rule
Jan 1, 1999	Mar 31, 1999	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Mar 31, 1999	Total Coliform Rule
Jan 1, 1999	Mar 31, 1999	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Mar 31, 1999	Total Coliform Rule
Jul 1, 1998	Sep 30, 1998	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Sep 30, 1998	Total Coliform Rule
Jul 1, 1998	Sep 30, 1998	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Sep 30, 1998	Total Coliform Rule
Apr 1, 1998	Jun 30, 1998	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 1998	Total Coliform Rule
Apr 1, 1998	Jun 30, 1998	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 1998	Total Coliform Rule
Dec 24, 1980	Jan 23, 1981	Nitrate	MR	No	Yes	—	10 mg/L	—	Archived	Jan 23, 1981	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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