BLACK HAWK, CO · Gilpin County

BLACK HAWK CITY OF 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): CO0124147
System type: Community Water System
Population served: 15,167
Service connections: 117
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Monitoring and Reporting (DBP)
—
Chlorite
September 1, 2021 – September 30, 2021
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
February 1, 2020 – February 29, 2020
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
January 1, 2020 – March 24, 2020
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2018 – December 31, 2018
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2018 – December 31, 2018
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2018 – December 31, 2018
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2018 – December 31, 2018
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2018 – December 31, 2018
Resolved
Monitoring, Regular
—
Toluene
January 1, 2018 – December 31, 2018
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2018 – December 31, 2018
Resolved
Monitoring, Regular
—
Styrene
January 1, 2018 – December 31, 2018
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2018 – December 31, 2018
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
April 1, 2012 – June 30, 2012
Resolved
Monitoring, Regular
—
Dalapon
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
OXAMYL
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Aldicarb sulfone
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Atrazine
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
LASSO
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Heptachlor
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
2,4-D
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Carbofuran
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Toxaphene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Dalapon
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Diquat
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Endothall
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
OXAMYL
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Simazine
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Carbofuran
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
LASSO
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Heptachlor
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 1993 – April 30, 1993
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
September 1, 2021 – September 30, 2021	Monitoring and Reporting (DBP)	Chlorite	—	Resolved
February 1, 2020 – February 29, 2020	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
January 1, 2020 – March 24, 2020	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
January 1, 2018 – December 31, 2018	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2018 – December 31, 2018	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2018 – December 31, 2018	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2018 – December 31, 2018	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2018 – December 31, 2018	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2018 – December 31, 2018	Monitoring, Regular	Toluene	—	Resolved
January 1, 2018 – December 31, 2018	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2018 – December 31, 2018	Monitoring, Regular	Styrene	—	Resolved
January 1, 2018 – December 31, 2018	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
April 1, 2012 – June 30, 2012	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Dalapon	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	OXAMYL	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Aldicarb sulfone	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Atrazine	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	LASSO	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Heptachlor	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	2,4-D	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Carbofuran	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Toxaphene	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Dalapon	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Diquat	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Endothall	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	OXAMYL	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Simazine	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Carbofuran	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	LASSO	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Heptachlor	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Resolved
April 1, 1993 – April 30, 1993	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

October 27, 2021State Compliance achieved1 linked violation
October 26, 2021State Public Notification requested1 linked violation
October 26, 2021State Violation/Reminder Notice1 linked violation
August 27, 2020State Compliance achieved2 linked violations
August 10, 2020State Public Notification requested2 linked violations
August 10, 2020State Violation/Reminder Notice2 linked violations
April 3, 2020State Violation/Reminder Notice1 linked violation
April 3, 2020State Violation/Reminder Notice1 linked violation
April 3, 2020State Public Notification requested1 linked violation
April 3, 2020State Public Notification requested1 linked violation
April 3, 2020State Violation/Reminder Notice1 linked violation
April 3, 2020State Public Notification requested1 linked violation
March 24, 2020State Compliance achieved3 linked violations
February 20, 2019State Compliance achieved22 linked violations
February 8, 2019State Violation/Reminder Notice1 linked violation
February 8, 2019State Public Notification requested1 linked violation
February 8, 2019State Violation/Reminder Notice21 linked violations
February 8, 2019State Public Notification requested21 linked violations
February 26, 2018State Compliance achieved1 linked violation
May 1, 2017State Public Notification requested1 linked violation
May 1, 2017State Violation/Reminder Notice1 linked violation
October 5, 2016State Compliance achieved1 linked violation
December 8, 2015State Violation/Reminder Notice1 linked violation
December 8, 2015State Public Notification requested1 linked violation
June 27, 2013State Public Notification received6 linked violations
December 31, 2012State Compliance achieved3 linked violations
August 16, 2012State Violation/Reminder Notice2 linked violations
August 16, 2012State Public Notification requested1 linked violation
August 16, 2012State Violation/Reminder Notice1 linked violation
August 16, 2012State Public Notification requested3 linked violations
August 21, 2008State Compliance achieved63 linked violations
April 7, 2008State Compliance achieved58 linked violations
June 3, 1993State Formal Notice of Violation issued1 linked violation
June 3, 1993State Public Notification requested1 linked violation
June 3, 1993State Formal Notice of Violation issued2 linked violations

Contact

DALLAM, BRADLEY

303-582-2237

BLACK HAWK, CO 80422