Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	CO0124147
PWS Name	BLACK HAWK CITY OF
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	15167
County Served	Gilpin

The tables below list all violations that the state reported to EPA for this water system. Health-based violations are listed first, followed by treatment technique, MRDL, monitoring, reporting, and other violations.

Health-based	Violations of maximum contaminant levels (MCLs) or maximum residual disinfectant levels (MRDLs), which specify the highest concentrations of contaminants or disinfectants, respectively, allowed in drinking water; or of treatment technique (TT) rules, which specify required processes intended to reduce the amounts of contaminants in drinking water. MCLs, MRDLs, and treatment technique rules are all health-based drinking water standards.
Maximum Contaminant Level or MCL	The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.
Treatment Technique	A required process intended to reduce the level of a contaminant in drinking water.
Maximum residual disinfectant level or MRDL	The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
Monitoring & reporting	Failure to conduct regular monitoring of drinking water quality, as required by SDWA, or to submit monitoring results in a timely fashion to the primacy agency or EPA.
Public notification & other	Failure to provide notification to the public as required by the Violations of Public Notification Rule and the Consumer Confidence Report Rule, and violations of other requirements such as those violations related to variances and exemptions.

Violations

Violation Category Code	Violation Type Description	Rule Name	Contaminant Name	Violation ID	Compliance Status Description	Compliance Period Begin Date	Compliance Period End Date	Is Health Based Ind
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorite	3003694	Returned to Compliance	01-SEP-2021	30-SEP-2021	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	3003693	Returned to Compliance	01-APR-2020	30-JUN-2020	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	3003692	Returned to Compliance	01-APR-2020	30-JUN-2020	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	3003689	Returned to Compliance	01-FEB-2020	29-FEB-2020	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	3003691	Returned to Compliance	01-FEB-2020	29-FEB-2020	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	3003690	Returned to Compliance	01-JAN-2020	31-MAR-2020	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	3003683	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	3003682	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	3003681	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	3003680	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	3003684	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	3003685	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	3003686	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	3003687	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	3003688	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	3003667	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	3003679	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	3003668	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	3003669	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	3003670	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	3003671	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	3003678	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	3003677	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	3003676	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	3003675	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	3003674	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	3003673	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	3003672	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	Cryptosporidium	3003666	Returned to Compliance	01-OCT-2016	31-OCT-2016	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorite	3003661	Returned to Compliance	01-AUG-2015	31-AUG-2015	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	3003658	Returned to Compliance	01-JUN-2012	30-JUN-2012	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	3003659	Returned to Compliance	01-JUN-2012	30-JUN-2012	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	3003657	Returned to Compliance	01-APR-2012	30-JUN-2012	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	ETHYLENE DIBROMIDE	3003623	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	1,2-DIBROMO-3-CHLOROPROPANE	3003653	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	1,2-DIBROMO-3-CHLOROPROPANE	3003622	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Chlordane	3003655	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Chlordane	3003624	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Pentachlorophenol	3003620	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Pentachlorophenol	3003651	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Benzo(a)pyrene	3003650	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Benzo(a)pyrene	3003619	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	HEXACHLOROBENZENE	3003649	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	HEXACHLOROBENZENE	3003618	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	3003648	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	3003617	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	3003616	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	3003647	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Total Polychlorinated Biphenyls (PCB)	3003621	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Total Polychlorinated Biphenyls (PCB)	3003652	Returned to Compliance	01-JAN-2005	31-DEC-2007	No

1 - 50 of 96

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
3026039	3003694	SOX	State Compliance achieved	27-OCT-2021	State	-
3026035	3003692	SOX	State Compliance achieved	27-AUG-2020	State	-
3026035	3003693	SOX	State Compliance achieved	27-AUG-2020	State	-
3026028	3003689	SIE	State Public Notification requested	03-APR-2020	State	-
3026030	3003690	SIE	State Public Notification requested	03-APR-2020	State	-
3026032	3003691	SIE	State Public Notification requested	03-APR-2020	State	-
3026026	3003667	SOX	State Compliance achieved	20-FEB-2019	State	-
3026026	3003688	SOX	State Compliance achieved	20-FEB-2019	State	-
3026026	3003669	SOX	State Compliance achieved	20-FEB-2019	State	-
3026026	3003670	SOX	State Compliance achieved	20-FEB-2019	State	-
3026026	3003671	SOX	State Compliance achieved	20-FEB-2019	State	-
3026026	3003672	SOX	State Compliance achieved	20-FEB-2019	State	-
3026026	3003673	SOX	State Compliance achieved	20-FEB-2019	State	-
3026026	3003674	SOX	State Compliance achieved	20-FEB-2019	State	-
3026026	3003675	SOX	State Compliance achieved	20-FEB-2019	State	-
3026026	3003676	SOX	State Compliance achieved	20-FEB-2019	State	-
3026026	3003677	SOX	State Compliance achieved	20-FEB-2019	State	-
3026026	3003678	SOX	State Compliance achieved	20-FEB-2019	State	-
3026026	3003679	SOX	State Compliance achieved	20-FEB-2019	State	-
3026026	3003680	SOX	State Compliance achieved	20-FEB-2019	State	-
3026026	3003681	SOX	State Compliance achieved	20-FEB-2019	State	-
3026026	3003682	SOX	State Compliance achieved	20-FEB-2019	State	-
3026026	3003683	SOX	State Compliance achieved	20-FEB-2019	State	-
3026026	3003684	SOX	State Compliance achieved	20-FEB-2019	State	-
3026026	3003685	SOX	State Compliance achieved	20-FEB-2019	State	-
3026026	3003686	SOX	State Compliance achieved	20-FEB-2019	State	-
3026026	3003687	SOX	State Compliance achieved	20-FEB-2019	State	-
3026026	3003668	SOX	State Compliance achieved	20-FEB-2019	State	-
3026021	3003666	SOX	State Compliance achieved	26-FEB-2018	State	-
3026012	3003661	SOX	State Compliance achieved	05-OCT-2016	State	-
3026009	3003657	SIF	State Public Notification received	27-JUN-2013	State	-
3026009	3003659	SIF	State Public Notification received	27-JUN-2013	State	-
3026009	3003658	SIF	State Public Notification received	27-JUN-2013	State	-
3026001	3003594	SOX	State Compliance achieved	21-AUG-2008	State	-
3026001	3003655	SOX	State Compliance achieved	21-AUG-2008	State	-
3026001	3003595	SOX	State Compliance achieved	21-AUG-2008	State	-
3026001	3003596	SOX	State Compliance achieved	21-AUG-2008	State	-
3026001	3003597	SOX	State Compliance achieved	21-AUG-2008	State	-
3026001	3003598	SOX	State Compliance achieved	21-AUG-2008	State	-
3026001	3003599	SOX	State Compliance achieved	21-AUG-2008	State	-
3026001	3003600	SOX	State Compliance achieved	21-AUG-2008	State	-
3026001	3003601	SOX	State Compliance achieved	21-AUG-2008	State	-
3026001	3003602	SOX	State Compliance achieved	21-AUG-2008	State	-
3026001	3003603	SOX	State Compliance achieved	21-AUG-2008	State	-
3026001	3003604	SOX	State Compliance achieved	21-AUG-2008	State	-
3026001	3003605	SOX	State Compliance achieved	21-AUG-2008	State	-
3026001	3003606	SOX	State Compliance achieved	21-AUG-2008	State	-
3026001	3003607	SOX	State Compliance achieved	21-AUG-2008	State	-
3026001	3003608	SOX	State Compliance achieved	21-AUG-2008	State	-
3026001	3003609	SOX	State Compliance achieved	21-AUG-2008	State	-

1 - 50 of 96

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
HIDDEN VALLEY CLEAR CREEK DIVERSION POND	13646	Yes	Intake	Surface water	Permanent	Active
SPRING WELL H	2397	Yes	Well	Ground water under the influence of surface water	Seasonal	Active
BLACK HAWK NORTH CLEAR CREEK WELL 3	24099	Yes	Well	Ground water under the influence of surface water	Permanent	Active
SPRING WELL G1	2399	Yes	Well	Ground water under the influence of surface water	Permanent	Active
SPRING WELL K	2398	Yes	Well	Ground water under the influence of surface water	Permanent	Active
DORY HILL RD FMG WELL NO 2	2396	Yes	Well	Ground water under the influence of surface water	Permanent	Active
DORY HILL ROAD FMG WELL NO 4	2394	Yes	Well	Ground water under the influence of surface water	Permanent	Active
COUNTY ROAD SPRING WELL NO 2	2393	Yes	Well	Ground water under the influence of surface water	Permanent	Active
COUNTY ROAD SPRING WELL NO 1	2392	Yes	Well	Ground water under the influence of surface water	Permanent	Active
SPRING WELL G2	2391	Yes	Well	Ground water under the influence of surface water	Permanent	Active
DORY HILL RD FMG WELL NO 1	2395	Yes	Well	Ground water under the influence of surface water	Emergency	Active
K1 INTAKE INF GAL	274	Yes	Intake	Surface water	Permanent	Active
G INTAKE INF GALLERY	273	Yes	Intake	Surface water	Permanent	Active
NORTH CLEAR CREEK INF GALLERY	272	Yes	Intake	Surface water	Permanent	Active
HIDDEN VALLEY CLEAR CREEK INF GALLERY	271	Yes	Intake	Surface water	Permanent	Active
N CLEAR CREEK FIREHOUSE INTKE	269	Yes	Intake	Surface water	Permanent	Active
DISTRIBUTION SYSTEM	6777	No	Distribution System/Zone	-	-	Active
HORN STREET PUMP STATION	16916	No	Pump Facility	-	-	Active
BOBTAIL PUMP STATION	16917	No	Pump Facility	-	-	Active
COMBINED RAW SOURCE	14005	No	Sampling Station	-	-	Active
COMBINED RAW SOURCE	21543	No	Sampling Station	-	-	Active
MINERS MESA STORAGE TANK	270	No	Sampling Station	-	-	Inactive
SILVER GULCH STORAGE TANK	18056	No	Storage	-	-	Active
DORY HILL STORAGE TANK	19445	No	Storage	-	-	Active
MINERS MESA TANK	20774	No	Storage	-	-	Active
HIDDEN VALLEY PUMP STATION 1	22769	No	Storage	-	-	Active
HIDDEN VALLEY PUMP STATION 2	22770	No	Storage	-	-	Active
SUMMIT SURGE TANK	22771	No	Storage	-	-	Active
DORY HILL SWTP01	3874	No	Treatment Plant	-	-	Active
HIDDEN VALLEY SWTP02	3875	No	Treatment Plant	-	-	Active

1 - 30 of 30

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
DORY HILL SWTP01	3874	Chlorine Dioxide	Taste / odor control
DORY HILL SWTP01	3874	Coagulation	Particulate removal
DORY HILL SWTP01	3874	Flocculation	Particulate removal
DORY HILL SWTP01	3874	Innovative	Particulate removal
DORY HILL SWTP01	3874	Gaseous Chlorination, Post	Disinfection
DORY HILL SWTP01	3874	Innovative	Corrosion control
DORY HILL SWTP01	3874	Innovative	Disinfection
HIDDEN VALLEY SWTP02	3875	Innovative	Corrosion control
HIDDEN VALLEY SWTP02	3875	Coagulation	Particulate removal
HIDDEN VALLEY SWTP02	3875	Flocculation	Particulate removal
HIDDEN VALLEY SWTP02	3875	Filtration, Pressure Sand	Particulate removal
HIDDEN VALLEY SWTP02	3875	Sedimentation	Particulate removal
HIDDEN VALLEY SWTP02	3875	Gaseous Chlorination, Post	Disinfection
HIDDEN VALLEY SWTP02	3875	Innovative	Disinfection
HIDDEN VALLEY SWTP02	3875	Innovative	Corrosion control
HIDDEN VALLEY SWTP02	3875	Chlorine Dioxide	Disinfection

1 - 16 of 16

For more information on a Water System:
Ask the operators of your water system, contact your primacy agency or file a Freedom of Information Act (FOIA) request.
Drinking water in general: Find out more about your drinking water web site or call the Safe Drinking Water Hotline (1-800-426-4791). EPA has also prepared a table about various regulated drinking water contaminants.
Tools for accessing EPA drinking water data: Safe Drinking Water Information System (SDWIS) Federal Reporting Services and Drinking Water Performance and Results Report.
Research Data: As well as monitoring the levels of drinking water contaminants for which EPA has set standards, EPA, states, and water systems also carry out studies of contaminants that may need to be regulated in the future. For more information about these contaminants, please see the National Contaminant Occurrence Database.

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