Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	CO0107487
PWS Name	LOUISVILLE CITY OF
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	20975
County Served	Boulder

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
RPT	LSL Reporting	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	652	Returned to Compliance	17-OCT-2024	-	No
TT	Single Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	635	Returned to Compliance	01-DEC-2021	31-DEC-2021	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	636	Returned to Compliance	01-DEC-2021	31-DEC-2021	Yes
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	E. COLI	622	Returned to Compliance	01-APR-2018	30-APR-2018	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	E. COLI	616	Returned to Compliance	01-JUL-2017	31-JUL-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	605	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	604	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	603	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	602	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	601	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	600	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	599	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	598	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	597	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	596	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	606	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	607	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	608	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	609	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	589	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	595	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	590	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	591	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	592	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	593	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	594	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorite	578	Returned to Compliance	01-OCT-2014	31-OCT-2014	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorite	577	Returned to Compliance	01-APR-2014	30-APR-2014	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	574	Returned to Compliance	01-SEP-2011	30-SEP-2011	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	573	Returned to Compliance	01-SEP-2011	30-SEP-2011	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	570	Returned to Compliance	01-MAY-2010	31-MAY-2010	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	571	Returned to Compliance	01-MAY-2010	31-MAY-2010	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	572	Returned to Compliance	01-APR-2010	30-JUN-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	507	Returned to Compliance	01-APR-2007	30-JUN-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	14990	Returned to Compliance	01-JAN-1989	31-DEC-1989	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	15390	Returned to Compliance	01-JAN-1989	31-DEC-1989	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	14890	Returned to Compliance	01-JAN-1989	31-DEC-1989	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	15290	Returned to Compliance	01-JAN-1989	31-DEC-1989	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	15090	Returned to Compliance	01-JAN-1989	31-DEC-1989	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	15190	Returned to Compliance	01-JAN-1989	31-DEC-1989	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	14790	Returned to Compliance	01-JAN-1989	31-DEC-1989	No

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Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
403	652	SIE	State Public Notification requested	07-NOV-2024	State	-
387	636	SIF	State Public Notification received	17-FEB-2022	State	-
386	635	SIF	State Public Notification received	17-FEB-2022	State	-
368	622	SIF	State Public Notification received	28-JUN-2019	State	-
361	597	SIF	State Public Notification received	28-JUN-2018	State	-
361	589	SIF	State Public Notification received	28-JUN-2018	State	-
361	590	SIF	State Public Notification received	28-JUN-2018	State	-
361	591	SIF	State Public Notification received	28-JUN-2018	State	-
361	592	SIF	State Public Notification received	28-JUN-2018	State	-
361	593	SIF	State Public Notification received	28-JUN-2018	State	-
361	594	SIF	State Public Notification received	28-JUN-2018	State	-
361	595	SIF	State Public Notification received	28-JUN-2018	State	-
361	596	SIF	State Public Notification received	28-JUN-2018	State	-
361	616	SIF	State Public Notification received	28-JUN-2018	State	-
361	598	SIF	State Public Notification received	28-JUN-2018	State	-
361	599	SIF	State Public Notification received	28-JUN-2018	State	-
361	600	SIF	State Public Notification received	28-JUN-2018	State	-
361	601	SIF	State Public Notification received	28-JUN-2018	State	-
361	602	SIF	State Public Notification received	28-JUN-2018	State	-
361	603	SIF	State Public Notification received	28-JUN-2018	State	-
361	604	SIF	State Public Notification received	28-JUN-2018	State	-
361	605	SIF	State Public Notification received	28-JUN-2018	State	-
361	606	SIF	State Public Notification received	28-JUN-2018	State	-
361	607	SIF	State Public Notification received	28-JUN-2018	State	-
361	608	SIF	State Public Notification received	28-JUN-2018	State	-
361	609	SIF	State Public Notification received	28-JUN-2018	State	-
345	578	SOX	State Compliance achieved	01-JUL-2015	State	-
341	577	SOX	State Compliance achieved	26-AUG-2014	State	Compliant 2Q14 data rcvd. Vio was therefore a late reporting vio.
338	574	SOX	State Compliance achieved	15-NOV-2011	State	Sept 2011 MOR was received 11/15/11 dgj
338	573	SOX	State Compliance achieved	15-NOV-2011	State	Sept 2011 MOR was received 11/15/11 dgj
329	570	SIF	State Public Notification received	10-MAY-2011	State	-
329	571	SIF	State Public Notification received	10-MAY-2011	State	-
329	572	SIF	State Public Notification received	10-MAY-2011	State	-
320	507	SIF	State Public Notification received	30-JUN-2008	State	-
8003091	15390	SOX	State Compliance achieved	24-MAY-1991	State	LOUISVILLE - VOC FTM - NOW IN COMPLIANCE
8003091	15290	SOX	State Compliance achieved	24-MAY-1991	State	LOUISVILLE - VOC FTM - NOW IN COMPLIANCE
8003091	15090	SOX	State Compliance achieved	24-MAY-1991	State	LOUISVILLE - VOC FTM - NOW IN COMPLIANCE
8003091	14990	SOX	State Compliance achieved	24-MAY-1991	State	LOUISVILLE - VOC FTM - NOW IN COMPLIANCE
8003091	14890	SOX	State Compliance achieved	24-MAY-1991	State	LOUISVILLE - VOC FTM - NOW IN COMPLIANCE
8003091	14790	SOX	State Compliance achieved	24-MAY-1991	State	LOUISVILLE - VOC FTM - NOW IN COMPLIANCE
8003091	15190	SOX	State Compliance achieved	24-MAY-1991	State	LOUISVILLE - VOC FTM - NOW IN COMPLIANCE

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
MARSHALL LAKE	95	Yes	Intake	Surface water	Permanent	Active
LOUISVILLE RESERVOIR	96	Yes	Intake	Surface water	Permanent	Active
DISTRIBUTION SYSTEM	6489	No	Distribution System/Zone	-	-	Active
COMBINED RAW SOURCE	13979	No	Sampling Station	-	-	Active
COMBINED RAW SOURCE	13980	No	Sampling Station	-	-	Active
SOUTH TANK	14328	No	Storage	-	-	Active
NORTH TANK	14329	No	Storage	-	-	Active
SYSTEM TANK	14330	No	Storage	-	-	Active
NORTH PLANT CLEARWELL	25990	No	Storage	-	-	Active
SOUTH PLANT CLEARWELL	25991	No	Storage	-	-	Active
SID COPELAND (NORTH) WTP	3436	No	Treatment Plant	-	-	Active
HOWARD BERRY (SOUTH) WTP	3437	No	Treatment Plant	-	-	Active

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Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
SID COPELAND (NORTH) WTP	3436	Chlorine Dioxide	Organics removal
SID COPELAND (NORTH) WTP	3436	Algae Control	Disinfection by-products control
SID COPELAND (NORTH) WTP	3436	Flocculation	Particulate removal
SID COPELAND (NORTH) WTP	3436	Coagulation	Particulate removal
SID COPELAND (NORTH) WTP	3436	Filtration, Rapid Sand	Particulate removal
SID COPELAND (NORTH) WTP	3436	Hypochlorination, Post	Disinfection
SID COPELAND (NORTH) WTP	3436	Fluoridation	Other
SID COPELAND (NORTH) WTP	3436	Inhibitor, Silicate	Taste / odor control
SID COPELAND (NORTH) WTP	3436	Innovative	Disinfection by-products control
SID COPELAND (NORTH) WTP	3436	Microscreening	Particulate removal
SID COPELAND (NORTH) WTP	3436	Sedimentation	Particulate removal
SID COPELAND (NORTH) WTP	3436	Innovative	Disinfection
HOWARD BERRY (SOUTH) WTP	3437	Chlorine Dioxide	Inorganics removal
HOWARD BERRY (SOUTH) WTP	3437	Microscreening	Particulate removal
HOWARD BERRY (SOUTH) WTP	3437	Coagulation	Particulate removal
HOWARD BERRY (SOUTH) WTP	3437	Flocculation	Particulate removal
HOWARD BERRY (SOUTH) WTP	3437	Sedimentation	Particulate removal
HOWARD BERRY (SOUTH) WTP	3437	Algae Control	Organics removal
HOWARD BERRY (SOUTH) WTP	3437	Chlorine Dioxide	Organics removal
HOWARD BERRY (SOUTH) WTP	3437	Filtration, Rapid Sand	Particulate removal
HOWARD BERRY (SOUTH) WTP	3437	Hypochlorination, Post	Disinfection
HOWARD BERRY (SOUTH) WTP	3437	Innovative	Disinfection
HOWARD BERRY (SOUTH) WTP	3437	Fluoridation	Other
HOWARD BERRY (SOUTH) WTP	3437	Inhibitor, Silicate	Corrosion control
HOWARD BERRY (SOUTH) WTP	3437	Innovative	Corrosion control

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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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