ESTES PARK CG AT MARYS LAKE

Colorado — Transient Non-Community — PWSID: CO0235501

System Information

PWSID	CO0235501
System Name	ESTES PARK CG AT MARYS LAKE
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	Aug 7, 1985
Last Reported	Nov 17, 2025

Location & Contact

State	Colorado
City	ESTES PARK
ZIP Code	80517
Address	2120 MARYS LAKE RD
Organization	SMITH, ZENDA
Phone	970-342-5723

Population & Service

Population Served	700
Service Connections	95

Drinking Water Violations (49)

This water system has 49 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 27, 2023	—	Revised Total Coliform Rule	Other	No	No	—	—	—	Resolved	Aug 26, 2023	Revised Total Coliform Rule
Jul 27, 2023	—	Revised Total Coliform Rule	Other	No	No	—	—	—	Resolved	Aug 26, 2023	Revised Total Coliform Rule
Jul 27, 2023	—	Revised Total Coliform Rule	Other	No	No	—	—	—	Resolved	Aug 26, 2023	Revised Total Coliform Rule
Jan 1, 2014	Dec 31, 2014	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2014	Nitrate Rule
Jan 1, 2014	Dec 31, 2014	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2014	Nitrate Rule
Jan 1, 2014	Dec 31, 2014	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2014	Nitrate Rule
Jul 1, 2013	Jul 31, 2013	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jul 31, 2013	Total Coliform Rule
Jul 1, 2013	Jul 31, 2013	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jul 31, 2013	Total Coliform Rule
Jul 1, 2013	Jul 31, 2013	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jul 31, 2013	Total Coliform Rule
Apr 1, 2013	Jun 30, 2013	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 2013	Total Coliform Rule
Apr 1, 2013	Jun 30, 2013	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 2013	Total Coliform Rule
Apr 1, 2013	Jun 30, 2013	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 2013	Total Coliform Rule
Apr 1, 2013	Jun 30, 2013	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 2013	Total Coliform Rule
Jan 1, 2013	Dec 31, 2013	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2013	Nitrate Rule
Jan 1, 2013	Dec 31, 2013	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2013	Nitrate Rule
Jan 1, 2013	Dec 31, 2013	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2013	Nitrate Rule
Jun 1, 2012	—	E. COLI	MR	No	Yes	—	—	—	Resolved	Jul 16, 2015	Ground Water Rule
Jun 1, 2012	—	E. COLI	MR	No	Yes	—	—	—	Resolved	Jul 16, 2015	Ground Water Rule
Jun 1, 2012	—	E. COLI	MR	No	Yes	—	—	—	Resolved	Jul 16, 2015	Ground Water Rule
Jun 1, 2012	—	E. COLI	MR	No	Yes	—	—	—	Resolved	Jul 16, 2015	Ground Water Rule
Jul 1, 2011	Sep 30, 2011	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Sep 30, 2011	Total Coliform Rule
Jul 1, 2011	Sep 30, 2011	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Sep 30, 2011	Total Coliform Rule
Jul 1, 2011	Sep 30, 2011	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Sep 30, 2011	Total Coliform Rule
Apr 1, 2010	Jun 30, 2010	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 2010	Total Coliform Rule
Apr 1, 2010	Jun 30, 2010	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 2010	Total Coliform Rule
Apr 1, 2010	Jun 30, 2010	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 2010	Total Coliform Rule
Jan 1, 2009	Dec 31, 2009	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2009	Nitrate Rule
Jan 1, 2009	Dec 31, 2009	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2009	Nitrate Rule
Jan 1, 2009	Dec 31, 2009	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2009	Nitrate Rule
Jan 1, 2007	Dec 31, 2007	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2007	Nitrate Rule
Jan 1, 2007	Dec 31, 2007	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2007	Nitrate Rule
Jan 1, 2007	Dec 31, 2007	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2007	Nitrate Rule
Jan 1, 2006	Dec 31, 2006	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Jun 26, 2006	Nitrate Rule
Jan 1, 2006	Dec 31, 2006	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Jun 26, 2006	Nitrate Rule
Jan 1, 2004	Dec 31, 2004	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2004	Nitrate Rule
Jan 1, 2004	Dec 31, 2004	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2004	Nitrate Rule
Jan 1, 2004	Dec 31, 2004	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2004	Nitrate Rule
Apr 1, 2003	Jun 30, 2003	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 2003	Total Coliform Rule
Apr 1, 2003	Jun 30, 2003	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 2003	Total Coliform Rule
Apr 1, 2003	Jun 30, 2003	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 2003	Total Coliform Rule
Jan 1, 2000	Dec 31, 2000	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Dec 31, 2000	Nitrate Rule
Jan 1, 2000	Dec 31, 2000	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Dec 31, 2000	Nitrate Rule
Jan 1, 2000	Dec 31, 2000	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Dec 31, 2000	Nitrate Rule
Jan 1, 1999	Dec 31, 1999	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Dec 31, 1999	Nitrate Rule
Jan 1, 1999	Dec 31, 1999	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Dec 31, 1999	Nitrate Rule
Jan 1, 1999	Dec 31, 1999	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Dec 31, 1999	Nitrate Rule
Jan 1, 1997	Dec 31, 1997	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Dec 31, 1997	Nitrate Rule
Jan 1, 1997	Dec 31, 1997	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Dec 31, 1997	Nitrate Rule
Jan 1, 1997	Dec 31, 1997	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Dec 31, 1997	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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