CONEJOS, CO · Conejos County

CONEJOS WS Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of December 7, 2016. It is no longer an operating public water system under this PWSID, and no compliance deadlines — including the 2027 Consumer Confidence Report rule — apply to it.

If you are a resident looking for your current water provider, see water systems in Conejos County, CO.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 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): CO0111300
System type: Community Water System
Population served: 80
Service connections: 22
Ownership: privately owned
Water source: groundwater (wells)

CONEJOS WS is one of 1,060 community water systems in Colorado in the 500 or fewer people size category, formerly serving 80 people from groundwater.

EPA's federal records list this system as inactive in 2016; the record below is historical.

As of August 1, 2026, its federal record holds 46 entries between 1991 and 2016, all of which EPA lists as closed. Nothing has been added since 2016.

Of the 46, 41 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves volatile organic chemicals, the Total Coliform Rules, and synthetic organic chemicals.

Violation history

Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
July 1, 2016 – July 31, 2016
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2016 – December 7, 2016
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
December 1, 2013 – December 31, 2013
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
October 1, 2012 – December 31, 2012
Resolved
Failure To Address Deficiency
Health-based
Groundwater Rule
March 23, 2012 – September 12, 2014
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 2011 – December 31, 2013
Archived
Monitoring, Regular
—
Chlordane
January 1, 2011 – December 31, 2013
Archived
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
January 1, 2011 – December 31, 2013
Archived
Monitoring, Regular
—
Atrazine
January 1, 2011 – December 31, 2013
Archived
Monitoring, Regular
—
Aldicarb sulfone
January 1, 2011 – December 31, 2013
Archived
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2011 – December 31, 2013
Archived
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2011 – December 31, 2013
Archived
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2011 – December 31, 2013
Archived
Monitoring, Regular
—
Toluene
January 1, 2011 – December 31, 2013
Archived
Monitoring, Regular
—
Ethylbenzene
January 1, 2011 – December 31, 2013
Archived
Monitoring, Regular
—
Methoxychlor
January 1, 2011 – December 31, 2013
Archived
Monitoring, Regular
—
Dinoseb
January 1, 2011 – December 31, 2013
Archived
Monitoring, Regular
—
Nitrate
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
Chromium
January 1, 2011 – December 31, 2013
Archived
Monitoring, Regular
—
Mercury
January 1, 2011 – December 31, 2013
Archived
Monitoring, Regular
—
Antimony, Total
January 1, 2011 – December 31, 2013
Archived
Monitoring, Regular
—
Thallium, Total
January 1, 2011 – December 31, 2013
Archived
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2011 – December 31, 2013
Archived
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2011 – December 31, 2013
Archived
Monitoring, Regular
—
Combined Uranium
January 1, 2008 – December 31, 2013
Archived
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2005 – January 31, 2007
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
January 1, 2004 – January 31, 2007
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
January 1, 2002 – July 30, 2008
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
April 1, 2000 – April 30, 2000
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 1999 – July 31, 1999
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
January 1, 1999 – January 31, 1999
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
November 1, 1998 – November 30, 1998
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
June 1, 1996 – June 30, 1996
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
June 1, 1996 – June 30, 1996
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
May 1, 1996 – May 31, 1996
Resolved
Monitoring, Regular
—
Nitrate
January 1, 1994 – December 31, 1994
Archived
Monitoring, Regular
—
Nitrate
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
January 1, 1992 – December 31, 1995
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
September 1, 1991 – September 30, 1991
Archived
Monitoring, Regular
—
Trichloroethylene
January 1, 1991 – March 31, 1991
Archived
Monitoring, Regular
—
Benzene
January 1, 1991 – March 31, 1991
Archived
Monitoring, Regular
—
Carbon tetrachloride
January 1, 1991 – March 31, 1991
Archived
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 1991 – March 31, 1991
Archived
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 1991 – March 31, 1991
Archived
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 1991 – March 31, 1991
Archived
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 1991 – March 31, 1991
Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Period	Violation	Contaminant / rule	Health-based	Status
July 1, 2016 – July 31, 2016	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
July 1, 2016 – December 7, 2016	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
December 1, 2013 – December 31, 2013	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
October 1, 2012 – December 31, 2012	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
March 23, 2012 – September 12, 2014	Failure To Address Deficiency	Groundwater Rule	Health-based	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Archived
January 1, 2011 – December 31, 2013	Monitoring, Regular	Chlordane	—	Archived
January 1, 2011 – December 31, 2013	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Archived
January 1, 2011 – December 31, 2013	Monitoring, Regular	Atrazine	—	Archived
January 1, 2011 – December 31, 2013	Monitoring, Regular	Aldicarb sulfone	—	Archived
January 1, 2011 – December 31, 2013	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Archived
January 1, 2011 – December 31, 2013	Monitoring, Regular	1,2-Dichloropropane	—	Archived
January 1, 2011 – December 31, 2013	Monitoring, Regular	1,1,2-Trichloroethane	—	Archived
January 1, 2011 – December 31, 2013	Monitoring, Regular	Toluene	—	Archived
January 1, 2011 – December 31, 2013	Monitoring, Regular	Ethylbenzene	—	Archived
January 1, 2011 – December 31, 2013	Monitoring, Regular	Methoxychlor	—	Archived
January 1, 2011 – December 31, 2013	Monitoring, Regular	Dinoseb	—	Archived
January 1, 2011 – December 31, 2011	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Chromium	—	Archived
January 1, 2011 – December 31, 2013	Monitoring, Regular	Mercury	—	Archived
January 1, 2011 – December 31, 2013	Monitoring, Regular	Antimony, Total	—	Archived
January 1, 2011 – December 31, 2013	Monitoring, Regular	Thallium, Total	—	Archived
January 1, 2011 – December 31, 2013	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Archived
January 1, 2011 – December 31, 2013	Monitoring, Regular	o-Dichlorobenzene	—	Archived
January 1, 2008 – December 31, 2013	Monitoring, Regular	Combined Uranium	—	Archived
October 1, 2005 – January 31, 2007	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
January 1, 2004 – January 31, 2007	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
January 1, 2002 – July 30, 2008	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
April 1, 2000 – April 30, 2000	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
July 1, 1999 – July 31, 1999	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 1999 – January 31, 1999	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
November 1, 1998 – November 30, 1998	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
June 1, 1996 – June 30, 1996	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
June 1, 1996 – June 30, 1996	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
May 1, 1996 – May 31, 1996	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	Nitrate	—	Archived
January 1, 1993 – December 31, 1993	Monitoring, Regular	Nitrate	—	Resolved
January 1, 1992 – December 31, 1995	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
September 1, 1991 – September 30, 1991	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Archived
January 1, 1991 – March 31, 1991	Monitoring, Regular	Trichloroethylene	—	Archived
January 1, 1991 – March 31, 1991	Monitoring, Regular	Benzene	—	Archived
January 1, 1991 – March 31, 1991	Monitoring, Regular	Carbon tetrachloride	—	Archived
January 1, 1991 – March 31, 1991	Monitoring, Regular	p-Dichlorobenzene	—	Archived
January 1, 1991 – March 31, 1991	Monitoring, Regular	1,2-Dichloroethane	—	Archived
January 1, 1991 – March 31, 1991	Monitoring, Regular	1,1-Dichloroethylene	—	Archived
January 1, 1991 – March 31, 1991	Monitoring, Regular	1,1,1-Trichloroethane	—	Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

September 6, 2016State Public Notification requested2 linked violations
September 6, 2016State Public Notification requested2 linked violations
August 1, 2016State Public Notification requested2 linked violations
August 1, 2016State Violation/Reminder Notice1 linked violation
February 2, 2016State Public Notification requested2 linked violations
June 30, 2015State Compliance achieved2 linked violations
January 5, 2015State Compliance achieved18 linked violations
September 12, 2014State Compliance achieved2 linked violations
August 13, 2014State Public Notification requested2 linked violations
August 13, 2014State Public Notification requested3 linked violations
April 28, 2014State Administrative Penalty assessed6 linked violations
April 28, 2014State Administrative/Compliance Order with penalty issued84 linked violations
April 11, 2014State Public Notification requested32 linked violations
February 11, 2014State Public Notification requested22 linked violations
February 10, 2014State Public Notification requested2 linked violations
February 10, 2014State Public Notification requested40 linked violations
February 10, 2014State Violation/Reminder Notice41 linked violations
February 10, 2014State Public Notification requested25 linked violations
February 10, 2014State Public Notification requested11 linked violations
February 10, 2014State Violation/Reminder Notice11 linked violations
February 10, 2014State Public Notification requested4 linked violations
February 10, 2014State Violation/Reminder Notice2 linked violations
February 10, 2014State Violation/Reminder Notice2 linked violations
November 8, 2013State Public Notification requested2 linked violations
November 8, 2013State Violation/Reminder Notice1 linked violation
November 7, 2013State Violation/Reminder Notice2 linked violations
November 7, 2013State Public Notification requested2 linked violations
September 6, 2013State Public Notification requested2 linked violations
August 13, 2013State Violation/Reminder Notice2 linked violations
April 15, 2013State Public Notification requested2 linked violations
April 15, 2013State Public Notification requested2 linked violations
February 15, 2013State Violation/Reminder Notice1 linked violation
February 15, 2013State Public Notification requested1 linked violation
February 15, 2013State Violation/Reminder Notice3 linked violations
February 15, 2013State Public Notification requested4 linked violations
December 12, 2012State Public Notification requested2 linked violations
September 17, 2012State Public Notification requested2 linked violations
September 17, 2012State Public Notification requested2 linked violations
September 12, 2012State Compliance achieved2 linked violations
June 26, 2012State Public Notification received4 linked violations
June 25, 2012State Public Notification received3 linked violations
June 25, 2012State Compliance achieved3 linked violations
June 25, 2012State Public Notification received2 linked violations
February 8, 2012State Violation/Reminder Notice3 linked violations
November 7, 2011State Public Notification requested3 linked violations
January 20, 2011State Public Notification requested5 linked violations
January 20, 2011State Public Notification requested3 linked violations
January 20, 2011State Violation/Reminder Notice1 linked violation
June 24, 2010State Violation/Reminder Notice4 linked violations
June 24, 2010State Public Notification requested3 linked violations
January 19, 2010State Public Notification received4 linked violations
January 7, 2010State Violation/Reminder Notice5 linked violations
January 7, 2010State Public Notification requested3 linked violations
January 7, 2010State Violation/Reminder Notice4 linked violations
January 29, 2009State Violation/Reminder Notice6 linked violations
July 30, 2008State Compliance achieved4 linked violations
January 28, 2000State Public Notification requested2 linked violations
November 2, 1999State Formal Notice of Violation issued4 linked violations
August 31, 1999State Public Notification requested3 linked violations
August 31, 1999State Formal Notice of Violation issued6 linked violations
August 3, 1999State Public Notification requested27 linked violations
May 27, 1999State Formal Notice of Violation issued2 linked violations
April 27, 1999State Formal Notice of Violation issued3 linked violations
March 31, 1999State Public Notification requested1 linked violation
February 26, 1999State Public Notification requested1 linked violation
June 13, 1996State Formal Notice of Violation issued2 linked violations
June 11, 1996State Public Notification requested1 linked violation
June 11, 1996State Public Notification requested3 linked violations
June 11, 1996State Formal Notice of Violation issued1 linked violation
April 26, 1996State Formal Notice of Violation issued2 linked violations
June 1, 1995State Compliance achieved1 linked violation
March 6, 1995State Violation/Reminder Notice1 linked violation
March 6, 1995State Public Notification requested1 linked violation
December 2, 1994State Public Notification requested5 linked violations
August 14, 1992State Public Notification requested2 linked violations
June 26, 1991State Formal Notice of Violation issued7 linked violations
August 15, 1990State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record

Last known contact on file (system is inactive)

DURAN, SHIRLEY

719-588-9012

CONEJOS, CO 81129