GUNNISON, CO · Gunnison County

ANTELOPE HILLS ASSOC Water System

Current status

1 item on record is open and awaiting resolution as of July 4, 2026. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings. Full details are in the violation history below.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace Colorado’s official records. Always confirm current status with Colorado before making decisions based on this information.

System facts

System ID (PWSID): CO0126117
System type: Community Water System
Population served: 265
Service connections: 107
Ownership: privately owned
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Lead Consumer Notice
—
Lead and Copper Rule
January 1, 2026
Unaddressed
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
April 1, 2021 – April 30, 2021
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
April 1, 2021 – May 28, 2021
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
April 1, 2021 – April 30, 2021
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
October 1, 2020 – October 31, 2020
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2020 – November 16, 2020
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2019 – November 15, 2019
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2012 – December 31, 2012
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2012 – December 31, 2012
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2012 – December 31, 2012
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2012 – December 31, 2012
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2012 – December 31, 2012
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2012 – December 31, 2012
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2012 – December 31, 2012
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2012 – December 31, 2012
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2012 – December 31, 2012
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2012 – December 31, 2012
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2012 – December 31, 2012
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2012 – December 31, 2012
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2012 – December 31, 2012
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2012 – December 31, 2012
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2012 – December 31, 2012
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2012 – December 31, 2012
Resolved
Monitoring, Regular
—
Toluene
January 1, 2012 – December 31, 2012
Resolved
Monitoring, Regular
—
Styrene
January 1, 2012 – December 31, 2012
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Combined Radium (-226 and -228)
January 1, 2012 – December 31, 2012
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Combined Radium (-226 and -228)
January 1, 2011 – December 31, 2011
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
January 1, 2010 – December 31, 2010
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
January 1, 2009 – December 31, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 2008 – December 31, 2008
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
July 1, 2008 – September 30, 2008
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
April 1, 2008 – June 30, 2008
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
January 1, 2008 – March 31, 2008
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 2007 – December 31, 2007
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
July 1, 2007 – September 30, 2007
Resolved
Monitoring, Regular
—
Nickel
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Antimony, Total
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Cadmium
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Arsenic
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Methoxychlor
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 2002 – December 31, 2004
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 1997 – May 6, 1997
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
March 1, 1996 – March 31, 1996
Resolved

Unaddressed no corrective action on record yetResolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
January 1, 2026	Lead Consumer Notice	Lead and Copper Rule	—	Unaddressed
April 1, 2021 – April 30, 2021	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
April 1, 2021 – May 28, 2021	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
April 1, 2021 – April 30, 2021	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
October 1, 2020 – October 31, 2020	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
July 1, 2020 – November 16, 2020	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
October 1, 2019 – November 15, 2019	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
January 1, 2012 – December 31, 2012	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2012 – December 31, 2012	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2012 – December 31, 2012	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2012 – December 31, 2012	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2012 – December 31, 2012	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2012 – December 31, 2012	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2012 – December 31, 2012	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2012 – December 31, 2012	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2012 – December 31, 2012	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2012 – December 31, 2012	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2012 – December 31, 2012	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2012 – December 31, 2012	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2012 – December 31, 2012	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2012 – December 31, 2012	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2012 – December 31, 2012	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2012 – December 31, 2012	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2012 – December 31, 2012	Monitoring, Regular	Toluene	—	Resolved
January 1, 2012 – December 31, 2012	Monitoring, Regular	Styrene	—	Resolved
January 1, 2012 – December 31, 2012	Maximum Contaminant Level Violation, Single Sample	Combined Radium (-226 and -228)	Health-based	Resolved
January 1, 2011 – December 31, 2011	Maximum Contaminant Level Violation, Single Sample	Combined Radium (-226 and -228)	Health-based	Resolved
January 1, 2010 – December 31, 2010	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
January 1, 2009 – December 31, 2009	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
October 1, 2008 – December 31, 2008	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
July 1, 2008 – September 30, 2008	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
April 1, 2008 – June 30, 2008	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
January 1, 2008 – March 31, 2008	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
October 1, 2007 – December 31, 2007	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
July 1, 2007 – September 30, 2007	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Nickel	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Antimony, Total	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Cadmium	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Arsenic	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Methoxychlor	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Beryllium, Total	—	Resolved
January 1, 1997 – May 6, 1997	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
March 1, 1996 – March 31, 1996	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved

Unaddressed no corrective action on record yetResolved addressed and confirmed by the state

Enforcement actions

January 6, 2026State Violation/Reminder Notice1 linked violation
January 6, 2026State Public Notification requested1 linked violation
July 25, 2025State Public Notification requested1 linked violation
July 25, 2025State Violation/Reminder Notice1 linked violation
July 24, 2024State Compliance achieved1 linked violation
July 15, 2024State Public Notification requested1 linked violation
July 15, 2024State Violation/Reminder Notice1 linked violation
September 8, 2023State Compliance achieved2 linked violations
August 23, 2023State Compliance achieved1 linked violation
October 21, 2022State Violation/Reminder Notice1 linked violation
October 21, 2022State Public Notification requested1 linked violation
July 7, 2021State Compliance achieved1 linked violation
June 7, 2021State Violation/Reminder Notice2 linked violations
June 7, 2021State Public Notification requested1 linked violation
June 7, 2021State Public Notification requested1 linked violation
December 3, 2020State Violation/Reminder Notice1 linked violation
December 3, 2020State Violation/Reminder Notice2 linked violations
December 3, 2020State Public Notification requested3 linked violations
December 3, 2020State Violation/Reminder Notice1 linked violation
December 3, 2020State Public Notification requested1 linked violation
December 3, 2020State Public Notification requested2 linked violations
November 10, 2020State Public Notification requested1 linked violation
November 10, 2020State Compliance achieved4 linked violations
November 10, 2020State Violation/Reminder Notice1 linked violation
August 5, 2020State Public Notification requested1 linked violation
January 7, 2020State Compliance achieved1 linked violation
November 15, 2019State Compliance achieved1 linked violation
November 6, 2019State Public Notification requested1 linked violation
November 6, 2019State Violation/Reminder Notice1 linked violation
September 22, 2019State Compliance achieved1 linked violation
June 21, 2019State Public Notification received1 linked violation
May 22, 2019State Public Notification requested1 linked violation
May 22, 2019State Violation/Reminder Notice1 linked violation
January 2, 2018State Violation/Reminder Notice1 linked violation
January 2, 2018State Public Notification requested1 linked violation
November 2, 2017State Compliance achieved3 linked violations
September 29, 2017State Public Notification requested3 linked violations
September 29, 2017State Violation/Reminder Notice3 linked violations
September 7, 2016State Compliance achieved1 linked violation
October 16, 2015State no longer subject to Rule21 linked violations
October 8, 2015State Public Notification requested1 linked violation
October 8, 2015State Violation/Reminder Notice1 linked violation
April 1, 2015State Compliance achieved1 linked violation
September 12, 2014State Violation/Reminder Notice1 linked violation
August 25, 2014State Compliance achieved13 linked violations
October 16, 2013State Compliance achieved21 linked violations
March 28, 2013State Public Notification received21 linked violations
March 28, 2013State Public Notification received1 linked violation
February 11, 2013State Public Notification requested21 linked violations
February 11, 2013State Violation/Reminder Notice21 linked violations
July 26, 2012State Public Notification requested1 linked violation
July 26, 2012State Violation/Reminder Notice1 linked violation
June 30, 2012State Public Notification received1 linked violation
September 30, 2011State Public Notification received1 linked violation
July 26, 2011State Public Notification requested1 linked violation
July 26, 2011State Violation/Reminder Notice1 linked violation
December 28, 2010State Public Notification received1 linked violation
June 28, 2010State Public Notification received1 linked violation
May 13, 2010State Public Notification requested1 linked violation
May 13, 2010State Violation/Reminder Notice1 linked violation
December 28, 2009State Public Notification received1 linked violation
December 4, 2009State Public Notification requested1 linked violation
December 4, 2009State Violation/Reminder Notice1 linked violation
March 10, 2009State Compliance achieved1 linked violation
February 2, 2009State Public Notification requested1 linked violation
February 2, 2009State Violation/Reminder Notice1 linked violation
January 29, 2009State Violation/Reminder Notice1 linked violation
January 29, 2009State Public Notification requested1 linked violation
January 15, 2009State Administrative/Compliance Order without penalty issued13 linked violations
December 31, 2008State Public Notification received1 linked violation
November 10, 2008State Violation/Reminder Notice1 linked violation
November 10, 2008State Public Notification requested1 linked violation
September 8, 2008State Public Notification received1 linked violation
August 15, 2008State Violation/Reminder Notice1 linked violation
August 15, 2008State Public Notification requested1 linked violation
June 12, 2008State Public Notification received1 linked violation
May 15, 2008State Compliance achieved1 linked violation
May 14, 2008State Violation/Reminder Notice1 linked violation
May 14, 2008State Public Notification requested1 linked violation
April 7, 2008State Compliance achieved3 linked violations
March 18, 2008State Public Notification received3 linked violations
March 18, 2008State Public Notification received1 linked violation
March 18, 2008State Public Notification received3 linked violations
March 18, 2008State Public Notification received3 linked violations
November 29, 2007State Compliance achieved1 linked violation
November 21, 2007State Violation/Reminder Notice1 linked violation
September 6, 2007State Public Notification requested3 linked violations
March 15, 2007State Public Notification requested2 linked violations
March 15, 2007State Violation/Reminder Notice2 linked violations
February 13, 2007State Violation/Reminder Notice80 linked violations
February 13, 2007State Public Notification requested2 linked violations
July 15, 2005State Violation/Reminder Notice2 linked violations
May 4, 2005State Compliance achieved2 linked violations
February 22, 2005State Violation/Reminder Notice11 linked violations
February 21, 2005State Public Notification requested1 linked violation

Contact

DUFT, DAVID

970-275-8395

GUNNISON, CO 81230