BUFFALO CREEK, CO · Park County

SHAWNEE WCA Water System

Current status

No open violations on record as of July 4, 2026.

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): CO0147090
System type: Community Water System
Population served: 50
Service connections: 29
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Monitoring, Regular
—
Nitrate
July 1, 2025 – September 30, 2025
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
September 1, 2022 – September 30, 2022
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
January 1, 2010 – January 31, 2010
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
January 1, 2010 – January 31, 2010
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
April 1, 2006 – April 30, 2006
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
June 1, 2002 – June 30, 2002
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 2002 – December 31, 2002
Resolved
Monitoring, Regular
—
Mercury
January 1, 2002 – December 31, 2002
Resolved
Monitoring, Regular
—
Selenium
January 1, 2002 – December 31, 2002
Resolved
Monitoring, Regular
—
Antimony, Total
January 1, 1998 – December 31, 1998
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 1998 – December 31, 1998
Resolved
Monitoring, Regular
—
Barium
January 1, 1998 – December 31, 1998
Resolved
Monitoring, Regular
—
Arsenic
January 1, 1998 – December 31, 1998
Resolved
Monitoring, Regular
—
Nickel
January 1, 1998 – December 31, 1998
Resolved
Monitoring, Regular
—
Mercury
January 1, 1998 – December 31, 1998
Resolved
Monitoring, Regular
—
Chromium
January 1, 1998 – December 31, 1998
Resolved
Monitoring, Regular
—
Cadmium
January 1, 1998 – December 31, 1998
Resolved
Monitoring, Regular
—
Selenium
January 1, 1998 – December 31, 1998
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 1998 – December 31, 1998
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
March 1, 1994 – March 31, 1994
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 1991 – March 31, 1991
Archived
Monitoring, Regular
—
Carbon tetrachloride
January 1, 1991 – March 31, 1991
Archived
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 1991 – March 31, 1991
Archived
Monitoring, Regular
—
Trichloroethylene
January 1, 1991 – March 31, 1991
Archived
Monitoring, Regular
—
Benzene
January 1, 1991 – March 31, 1991
Archived
Monitoring, Regular
—
1,2-Dichloroethane
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, 2025 – September 30, 2025	Monitoring, Regular	Nitrate	—	Resolved
September 1, 2022 – September 30, 2022	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
January 1, 2010 – January 31, 2010	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2010 – January 31, 2010	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
April 1, 2006 – April 30, 2006	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
June 1, 2002 – June 30, 2002	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
January 1, 2002 – December 31, 2002	Monitoring, Regular	Beryllium, Total	—	Resolved
January 1, 2002 – December 31, 2002	Monitoring, Regular	Mercury	—	Resolved
January 1, 2002 – December 31, 2002	Monitoring, Regular	Selenium	—	Resolved
January 1, 1998 – December 31, 1998	Monitoring, Regular	Antimony, Total	—	Resolved
January 1, 1998 – December 31, 1998	Monitoring, Regular	Thallium, Total	—	Resolved
January 1, 1998 – December 31, 1998	Monitoring, Regular	Barium	—	Resolved
January 1, 1998 – December 31, 1998	Monitoring, Regular	Arsenic	—	Resolved
January 1, 1998 – December 31, 1998	Monitoring, Regular	Nickel	—	Resolved
January 1, 1998 – December 31, 1998	Monitoring, Regular	Mercury	—	Resolved
January 1, 1998 – December 31, 1998	Monitoring, Regular	Chromium	—	Resolved
January 1, 1998 – December 31, 1998	Monitoring, Regular	Cadmium	—	Resolved
January 1, 1998 – December 31, 1998	Monitoring, Regular	Selenium	—	Resolved
January 1, 1998 – December 31, 1998	Monitoring, Regular	Beryllium, Total	—	Resolved
March 1, 1994 – March 31, 1994	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 1991 – March 31, 1991	Monitoring, Regular	p-Dichlorobenzene	—	Archived
January 1, 1991 – March 31, 1991	Monitoring, Regular	Carbon tetrachloride	—	Archived
January 1, 1991 – March 31, 1991	Monitoring, Regular	1,1-Dichloroethylene	—	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	1,2-Dichloroethane	—	Archived

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

Enforcement actions

October 28, 2025State Compliance achieved5 linked violations
November 18, 2022State Public Notification requested7 linked violations
November 18, 2022State Violation/Reminder Notice7 linked violations
November 8, 2022State Compliance achieved1 linked violation
September 23, 2022State Public Notification requested2 linked violations
March 28, 2016State Public Notification requested1 linked violation
March 28, 2016State Violation/Reminder Notice1 linked violation
March 25, 2016State Public Notification received3 linked violations
February 13, 2016State Compliance achieved1 linked violation
September 25, 2015State Public Notification received1 linked violation
September 23, 2015State Public Notification requested2 linked violations
July 31, 2015State Public Notification requested2 linked violations
February 14, 2013State Public Notification requested4 linked violations
March 15, 2011State Public Notification received4 linked violations
March 4, 2010State Public Notification requested2 linked violations
March 4, 2010State Public Notification requested6 linked violations
March 4, 2010State Violation/Reminder Notice7 linked violations
February 8, 2008State Violation/Reminder Notice11 linked violations
July 5, 2002State Formal Notice of Violation issued2 linked violations
September 29, 2000State Formal Notice of Violation issued1 linked violation
April 16, 1999State Compliance achieved1 linked violation
April 16, 1999State Compliance achieved1 linked violation
April 16, 1999State Compliance achieved1 linked violation
April 16, 1999State Compliance achieved1 linked violation
April 16, 1999State Compliance achieved1 linked violation
April 16, 1999State Compliance achieved1 linked violation
April 16, 1999State Compliance achieved1 linked violation
April 16, 1999State Compliance achieved1 linked violation
April 16, 1999State Compliance achieved1 linked violation
April 16, 1999State Compliance achieved1 linked violation
March 3, 1999State Formal Notice of Violation issued1 linked violation
March 3, 1999State Formal Notice of Violation issued1 linked violation
March 3, 1999State Formal Notice of Violation issued1 linked violation
March 3, 1999State Public Notification requested1 linked violation
March 3, 1999State Public Notification requested1 linked violation
March 3, 1999State Public Notification requested1 linked violation
March 3, 1999State Public Notification requested1 linked violation
March 3, 1999State Public Notification requested1 linked violation
March 3, 1999State Public Notification requested1 linked violation
March 3, 1999State Public Notification requested1 linked violation
March 3, 1999State Public Notification requested1 linked violation
March 3, 1999State Formal Notice of Violation issued1 linked violation
March 3, 1999State Formal Notice of Violation issued1 linked violation
March 3, 1999State Public Notification requested1 linked violation
March 3, 1999State Public Notification requested1 linked violation
March 3, 1999State Formal Notice of Violation issued1 linked violation
March 3, 1999State Formal Notice of Violation issued1 linked violation
March 3, 1999State Formal Notice of Violation issued1 linked violation
March 3, 1999State Formal Notice of Violation issued1 linked violation
March 3, 1999State Formal Notice of Violation issued1 linked violation
March 3, 1999State Formal Notice of Violation issued1 linked violation
April 28, 1994State Public Notification requested3 linked violations

Contact

GREEN, JIM

303-838-5312

BUFFALO CREEK, CO 80425