AMERICAN COLLOID COMPANY

Wyoming — Non-Transient Non-Community — PWSID: WY5601252

System Information

PWSID	WY5601252
System Name	AMERICAN COLLOID COMPANY
System Type	Non-Transient Non-Community
Water Source	Ground Water
Activity Status	Active
Owner Type	Private
EPA Region	08
Serves School	No
Wholesaler	No
First Reported	Aug 12, 1993
Last Reported	Nov 17, 2025

Location & Contact

State	Wyoming
City	COLONY
ZIP Code	82710
Address	692 US Hwy 212
Organization	WILKERSON, RUSSELL
Phone	307-548-6521

Population & Service

Population Served	93
Service Connections	6

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
Nov 10, 2022	—	E. COLI	MR	No	Yes	—	—	—	Resolved	Dec 19, 2022	Ground Water Rule
Jul 1, 2022	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Jul 28, 2023	Lead and Copper Rule
Jul 26, 2017	—	E. COLI	MR	No	Yes	—	—	—	Resolved	Dec 10, 2017	Ground Water Rule
Jul 26, 2017	—	E. COLI	MR	No	Yes	—	—	—	Resolved	Dec 10, 2017	Ground Water Rule
Jul 26, 2017	—	E. COLI	MR	No	Yes	—	—	—	Resolved	Dec 10, 2017	Ground Water Rule
Jul 1, 2015	Sep 30, 2015	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Sep 30, 2015	Total Coliform Rule
Jul 1, 2015	Sep 30, 2015	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Sep 30, 2015	Total Coliform Rule
Apr 1, 2014	Jun 30, 2014	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 2014	Total Coliform Rule
Apr 1, 2014	Jun 30, 2014	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 2014	Total Coliform Rule
Jul 1, 2012	Sep 30, 2012	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Sep 30, 2012	Total Coliform Rule
Jul 1, 2012	Sep 30, 2012	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Sep 30, 2012	Total Coliform Rule
Oct 1, 2011	Oct 31, 2011	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 2011	Total Coliform Rule
Oct 1, 2011	Oct 31, 2011	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 2011	Total Coliform Rule
Oct 1, 2011	Oct 31, 2011	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 2011	Total Coliform Rule
Oct 1, 2011	Oct 31, 2011	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 2011	Total Coliform Rule
Jul 1, 2011	Jul 31, 2011	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jul 31, 2011	Total Coliform Rule
Jul 1, 2011	Jul 31, 2011	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jul 31, 2011	Total Coliform Rule
Oct 1, 2004	Dec 31, 2004	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Dec 31, 2004	Total Coliform Rule
Sep 1, 2004	Sep 30, 2004	Coliform (TCR)	MR	No	No	—	5% of samples	—	Archived	Sep 30, 2004	Total Coliform Rule
Jul 1, 2004	Jul 31, 2004	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Jul 31, 2004	Total Coliform Rule
Jul 1, 2000	Sep 30, 2000	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Sep 30, 2000	Total Coliform Rule
Jul 1, 2000	Sep 30, 2000	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Sep 30, 2000	Total Coliform Rule
Oct 1, 1999	Dec 31, 1999	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Dec 31, 1999	Total Coliform Rule
Oct 1, 1999	Dec 31, 1999	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Dec 31, 1999	Total Coliform Rule
Jul 1, 1999	Sep 30, 1999	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Sep 30, 1999	Total Coliform Rule
Jul 1, 1999	Sep 30, 1999	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Sep 30, 1999	Total Coliform Rule
—	—		—	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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