Is BLACK HAWK CITY OF required to publish a Consumer Confidence Report?

Yes. BLACK HAWK CITY OF is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is BLACK HAWK CITY OF’s next Consumer Confidence Report due?

BLACK HAWK CITY OF’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

BLACK HAWK, CO · Gilpin County

BLACK HAWK CITY OF Water System

Consumer Confidence Report status

BLACK HAWK CITY OF must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show no open violations for BLACK HAWK CITY OF.

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

BLACK HAWK CITY OF is one of 87 community water systems in Colorado in the 10,001 to 100,000 people size category, serving 15,167 people from surface water.

As of August 1, 2026, its federal record holds 43 entries between 1993 and 2020, all of which EPA lists as closed. Nothing has been added since 2020.

All 43 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 synthetic organic chemicals, volatile organic chemicals, and the Total Coliform Rules.

Violation history

Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
February 1, 2020 – February 29, 2020
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
February 1, 2020 – February 29, 2020
Resolved
Monitoring, Regular
—
Styrene
January 1, 2018 – December 31, 2018
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2018 – December 31, 2018
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2018 – December 31, 2018
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2018 – December 31, 2018
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2018 – December 31, 2018
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
—
Ethylbenzene
January 1, 2018 – December 31, 2018
Resolved
Monitoring and Reporting (DBP)
—
Chlorite
August 1, 2015 – August 31, 2015
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
June 1, 2012 – June 30, 2012
Resolved
Monitoring, Regular
—
2,4-D
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
2,4,5-TP
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Pentachlorophenol
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
BHC-GAMMA
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
—
Di(2-ethylhexyl) adipate
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Dinoseb
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Aldicarb sulfoxide
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Aldicarb sulfone
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Carbofuran
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Aldicarb
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Atrazine
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
2,4-D
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Pentachlorophenol
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Chlordane
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Heptachlor
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Methoxychlor
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Endothall
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
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
—
Hexachlorocyclopentadiene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Aldicarb sulfoxide
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Aldicarb sulfone
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Carbofuran
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Aldicarb
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Atrazine
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
February 1, 2020 – February 29, 2020	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
February 1, 2020 – February 29, 2020	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
January 1, 2018 – December 31, 2018	Monitoring, Regular	Styrene	—	Resolved
January 1, 2018 – December 31, 2018	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2018 – December 31, 2018	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2018 – December 31, 2018	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2018 – December 31, 2018	Monitoring, Regular	o-Dichlorobenzene	—	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	Ethylbenzene	—	Resolved
August 1, 2015 – August 31, 2015	Monitoring and Reporting (DBP)	Chlorite	—	Resolved
June 1, 2012 – June 30, 2012	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	2,4-D	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	2,4,5-TP	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Pentachlorophenol	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	BHC-GAMMA	—	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	Di(2-ethylhexyl) adipate	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Dinoseb	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Aldicarb sulfoxide	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Aldicarb sulfone	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Carbofuran	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Aldicarb	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Atrazine	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	2,4-D	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Pentachlorophenol	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Chlordane	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Heptachlor	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Methoxychlor	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Endothall	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	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	Hexachlorocyclopentadiene	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Aldicarb sulfoxide	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Aldicarb sulfone	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Carbofuran	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Aldicarb	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Atrazine	—	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 requested6 linked violations
August 16, 2012State Public Notification requested1 linked violation
August 16, 2012State Violation/Reminder Notice1 linked violation
February 12, 2008State Violation/Reminder Notice32 linked violations
June 3, 1993State Formal Notice of Violation issued2 linked violations
June 3, 1993State Public Notification requested1 linked violation
June 3, 1993State Formal Notice of Violation issued1 linked violation
June 3, 1993State Public Notification requestedgeneral compliance action — not tied to a specific violation on record

Common questions

Is BLACK HAWK CITY OF required to publish a Consumer Confidence Report?: Yes. BLACK HAWK CITY OF is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is BLACK HAWK CITY OF’s next Consumer Confidence Report due?: BLACK HAWK CITY OF’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does BLACK HAWK CITY OF have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for BLACK HAWK CITY OF.
What is a Consumer Confidence Report?: A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

DALLAM, BRADLEY

303-582-2237

BLACK HAWK, CO 80422