Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	MT0000274
PWS Name	LIBBY CITY OF
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	4892
County Served	Lincoln

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
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	986353	Known	01-DEC-2025	31-DEC-2025	Yes
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	986352	Returned to Compliance	01-MAR-2022	31-MAR-2022	Yes
TT	Treatment Technique (SWTR and GWR)	Long Term 2 Enhanced Surface Water Treatment Rule	Long Term 2 Enhanced Surface Water Treatment Rule	986351	Returned to Compliance	01-MAR-2022	31-MAR-2022	Yes
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	986329	Returned to Compliance	01-OCT-2021	31-OCT-2021	Yes
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	986348	Returned to Compliance	01-JAN-2021	31-DEC-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	986331	Returned to Compliance	01-JAN-2021	31-DEC-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	986332	Returned to Compliance	01-JAN-2021	31-DEC-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	986333	Returned to Compliance	01-JAN-2021	31-DEC-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	986334	Returned to Compliance	01-JAN-2021	31-DEC-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	986335	Returned to Compliance	01-JAN-2021	31-DEC-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	986336	Returned to Compliance	01-JAN-2021	31-DEC-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	986337	Returned to Compliance	01-JAN-2021	31-DEC-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	986338	Returned to Compliance	01-JAN-2021	31-DEC-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	986339	Returned to Compliance	01-JAN-2021	31-DEC-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	986340	Returned to Compliance	01-JAN-2021	31-DEC-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	986341	Returned to Compliance	01-JAN-2021	31-DEC-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	986342	Returned to Compliance	01-JAN-2021	31-DEC-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	986343	Returned to Compliance	01-JAN-2021	31-DEC-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	986344	Returned to Compliance	01-JAN-2021	31-DEC-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	986345	Returned to Compliance	01-JAN-2021	31-DEC-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	986346	Returned to Compliance	01-JAN-2021	31-DEC-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	986347	Returned to Compliance	01-JAN-2021	31-DEC-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	986330	Returned to Compliance	01-JAN-2021	31-DEC-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	986350	Returned to Compliance	01-JAN-2021	31-DEC-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	986349	Returned to Compliance	01-JAN-2021	31-DEC-2021	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	986328	Returned to Compliance	01-JUL-2019	-	No
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	986327	Returned to Compliance	01-DEC-2015	31-DEC-2015	Yes
TT	Single Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	986325	Returned to Compliance	01-MAR-2015	31-MAR-2015	Yes
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	986326	Returned to Compliance	01-MAR-2015	31-MAR-2015	Yes
TT	Single Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	986323	Returned to Compliance	01-MAR-2014	31-MAR-2014	Yes
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	986322	Returned to Compliance	01-MAR-2014	31-MAR-2014	Yes
MR	Monitoring, Regular	Arsenic Rule	Arsenic	986324	Returned to Compliance	01-JAN-2014	31-DEC-2014	No
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	986321	Returned to Compliance	01-JUN-2013	30-JUN-2013	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	986319	Returned to Compliance	01-MAY-2013	31-MAY-2013	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	986320	Returned to Compliance	01-MAY-2013	31-MAY-2013	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	986318	Returned to Compliance	01-APR-2013	30-APR-2013	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	986317	Returned to Compliance	01-MAR-2013	31-MAR-2013	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	986316	Returned to Compliance	01-FEB-2013	28-FEB-2013	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	986315	Returned to Compliance	01-JAN-2013	31-JAN-2013	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	986314	Returned to Compliance	01-DEC-2012	31-DEC-2012	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	986313	Returned to Compliance	01-NOV-2012	30-NOV-2012	Yes
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	986311	Returned to Compliance	01-JUL-2011	-	No
MR	Lead Consumer Notice	Lead and Copper Rule	Lead and Copper Rule	986310	Returned to Compliance	01-JAN-2011	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	985907	Returned to Compliance	05-FEB-2007	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	986107	Returned to Compliance	01-APR-2006	30-JUN-2006	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	986007	Returned to Compliance	01-APR-2006	30-JUN-2006	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	984907	Returned to Compliance	01-JAN-2006	31-DEC-2006	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	983807	Returned to Compliance	01-JAN-2006	31-DEC-2006	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	983907	Returned to Compliance	01-JAN-2006	31-DEC-2006	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	983707	Returned to Compliance	01-JAN-2006	31-DEC-2006	No

1 - 50 of 103

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
4483681	986353	SIE	State Public Notification requested	13-FEB-2026	State	-
4483677	986336	SOX	State Compliance achieved	15-NOV-2022	State	-
4483677	986349	SOX	State Compliance achieved	15-NOV-2022	State	-
4483677	986348	SOX	State Compliance achieved	15-NOV-2022	State	-
4483677	986347	SOX	State Compliance achieved	15-NOV-2022	State	-
4483677	986346	SOX	State Compliance achieved	15-NOV-2022	State	-
4483677	986345	SOX	State Compliance achieved	15-NOV-2022	State	-
4483677	986344	SOX	State Compliance achieved	15-NOV-2022	State	-
4483677	986330	SOX	State Compliance achieved	15-NOV-2022	State	-
4483677	986331	SOX	State Compliance achieved	15-NOV-2022	State	-
4483677	986332	SOX	State Compliance achieved	15-NOV-2022	State	-
4483677	986333	SOX	State Compliance achieved	15-NOV-2022	State	-
4483677	986334	SOX	State Compliance achieved	15-NOV-2022	State	-
4483677	986335	SOX	State Compliance achieved	15-NOV-2022	State	-
4483677	986350	SOX	State Compliance achieved	15-NOV-2022	State	-
4483677	986337	SOX	State Compliance achieved	15-NOV-2022	State	-
4483677	986338	SOX	State Compliance achieved	15-NOV-2022	State	-
4483677	986339	SOX	State Compliance achieved	15-NOV-2022	State	-
4483677	986340	SOX	State Compliance achieved	15-NOV-2022	State	-
4483677	986341	SOX	State Compliance achieved	15-NOV-2022	State	-
4483677	986342	SOX	State Compliance achieved	15-NOV-2022	State	-
4483677	986343	SOX	State Compliance achieved	15-NOV-2022	State	-
4483679	986352	SOX	State Compliance achieved	10-MAY-2022	State	Rec'd Apr 2022 MOR on 5/10/2022 RTC. LMK 5/18/2022
4483679	986351	SOX	State Compliance achieved	10-MAY-2022	State	Rec'd Apr 2022 MOR on 5/10/2022 RTC. LMK 5/18/2022
4483678	986329	SOX	State Compliance achieved	10-DEC-2021	State	Rec'd Nov 2021 MOR on 12/10/2021 RTC. LMK 5/18/2022
4483668	986328	SOX	State Compliance achieved	13-SEP-2019	State	9/13/2019 SOXed with 2018 CCR received, SJP;
4483665	986327	SOX	State Compliance achieved	11-FEB-2016	State	RTC with Jan 2016 monthly SWTR NTU OK. LMK
4483657	986326	SOX	State Compliance achieved	11-MAY-2015	State	RTC with good NTU readings in April 2015. LMK 5/15/2015
4483657	986325	SOX	State Compliance achieved	11-MAY-2015	State	RTC with good NTU readings in April 2015. LMK 5/15/2015
4483653	986313	SFM	State Administrative Penalty assessed	22-APR-2015	State	PEATS XML 2015-04-27 08:48:31
4483653	986314	SFM	State Administrative Penalty assessed	22-APR-2015	State	PEATS XML 2015-04-27 08:48:31
4483653	986315	SFM	State Administrative Penalty assessed	22-APR-2015	State	PEATS XML 2015-04-27 08:48:31
4483653	986316	SFM	State Administrative Penalty assessed	22-APR-2015	State	PEATS XML 2015-04-27 08:48:31
4483653	986317	SFM	State Administrative Penalty assessed	22-APR-2015	State	PEATS XML 2015-04-27 08:48:31
4483653	986318	SFM	State Administrative Penalty assessed	22-APR-2015	State	PEATS XML 2015-04-27 08:48:31
4483653	986319	SFM	State Administrative Penalty assessed	22-APR-2015	State	PEATS XML 2015-04-27 08:48:31
4483653	986321	SFM	State Administrative Penalty assessed	22-APR-2015	State	PEATS XML 2015-04-27 08:48:31
4483653	986322	SFM	State Administrative Penalty assessed	22-APR-2015	State	PEATS XML 2015-04-27 08:48:31
4483653	986323	SFM	State Administrative Penalty assessed	22-APR-2015	State	PEATS XML 2015-04-27 08:48:31
4483651	986324	SIE	State Public Notification requested	14-JAN-2015	State	-
4483639	986320	SOX	State Compliance achieved	11-JUL-2013	State	June reports that POE remained above 0.2 mg/L chlorine residual. LMK 7/11/13
4483614	986311	SOX	State Compliance achieved	09-AUG-2011	State	8/9/2011, recieved 2010 CCR. L.G.S>
4483611	986310	SOX	State Compliance achieved	11-MAR-2011	State	-
4483609	831097	SOX	State Compliance achieved	07-JAN-2009	State	6 months no MCL or MR violations. LRA 1/7/2009
4483609	117398	SOX	State Compliance achieved	07-JAN-2009	State	6 months no MCL or MR violations. LRA 1/7/2009
4483609	265592	SOX	State Compliance achieved	07-JAN-2009	State	6 months no MCL or MR violations. LRA 1/7/2009
4483609	978302	SOX	State Compliance achieved	07-JAN-2009	State	6 months no MCL or MR violations. LRA 1/7/2009
4483609	855195	SOX	State Compliance achieved	07-JAN-2009	State	6 months no MCL or MR violations. LRA 1/7/2009
4483609	307995	SOX	State Compliance achieved	07-JAN-2009	State	6 months no MCL or MR violations. LRA 1/7/2009
4483509	977195	SOX	State Compliance achieved	31-DEC-2008	State	-

1 - 50 of 103

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
INTAKE LOWER FLOWER CREEK RESERVOIR	7608	Yes	Intake	Surface water	Permanent	Active
RESERVOIR 2 LOWER FLOWER CREEK	14483	Yes	Reservoir	Surface water	Permanent	Active
RESERVOIR 1 UPPER FLOWER CREEK	14482	Yes	Reservoir	Surface water	Permanent	Active
CLEARWELL UNDER TP001	14485	No	Clear Well	-	-	Inactive
DISTRIBUTION SYSTEM	9950	No	Distribution System/Zone	-	-	Active
PRESSURE REDUCING STATION CEDAR ST	14488	No	Other	-	-	Inactive
PRESSURE CONTROL ASSEMBLY 1 CABINET HGHT	14486	No	Pressure Control	-	-	Active
STORAGE FACILITY 1 500,000 GAL	544	No	Storage	-	-	Active
TRANSMISSION MAIN RAW WATER	14484	No	Transmission Main (Manifold)	-	-	Active
TRANSMISSION MAIN FINISHED	18347	No	Transmission Main (Manifold)	-	-	Inactive
TREATMENT PLANT FOR FLOWER CREEK	3250	No	Treatment Plant	-	-	Active

1 - 11 of 11

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TREATMENT PLANT FOR FLOWER CREEK	3250	Gaseous Chlorination, Post	Disinfection
TREATMENT PLANT FOR FLOWER CREEK	3250	Filtration, Rapid Sand	Particulate removal
TREATMENT PLANT FOR FLOWER CREEK	3250	Flocculation	Particulate removal
TREATMENT PLANT FOR FLOWER CREEK	3250	Microscreening	Particulate removal
TREATMENT PLANT FOR FLOWER CREEK	3250	Sedimentation	Particulate removal
TREATMENT PLANT FOR FLOWER CREEK	3250	Inhibitor, Orthophosphate	Corrosion control

1 - 6 of 6

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.

Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Nav Menu

Your Drinking Water Query results from SDWIS Fed Reporting Services

Note

PWS Violation

Violations

Column Actions

Enforcement Actions

Enforcement Actions

Column Actions

PWS Facilities

All Facilities

Column Actions

PWS Treatment Processes

Treatment Processes

Column Actions