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PWS ID	MT0000463
PWS Name	BIG TIMBER CITY OF
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	1650
County Served	Sweet Grass

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	Failure to Filter (SWTR)	Surface Water Treatment Rule	Surface Water Treatment Rule	154377	Returned to Compliance	22-OCT-2014	-	Yes
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	154320	Returned to Compliance	01-JUL-2013	-	No
TT	Public Education	Lead and Copper Rule	Lead and Copper Rule	153710	Returned to Compliance	01-DEC-2009	-	Yes
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	153607	Returned to Compliance	01-JUL-2006	-	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate-Nitrite	152506	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate-Nitrite	148605	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	147005	Returned to Compliance	01-JUL-2003	31-DEC-2003	No
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	147505	Returned to Compliance	01-JAN-2003	30-JUN-2003	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endrin	148705	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Benzo(a)pyrene	151705	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	HEXACHLOROBENZENE	151605	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	151505	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	151405	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor epoxide	151005	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor	150805	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	LASSO	150705	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	150605	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb	150505	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Carbofuran	150405	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfone	150205	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfoxide	150105	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Hexachlorocyclopentadiene	150005	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dinoseb	149905	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Picloram	149805	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	149705	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Simazine	149605	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	OXAMYL	149505	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) adipate	149405	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dalapon	149305	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Toxaphene	149005	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Methoxychlor	148905	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	BHC-GAMMA	148805	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Chlordane	152205	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Pentachlorophenol	151805	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	146502	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	29998	Returned to Compliance	01-OCT-1997	31-OCT-1997	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	146395	Returned to Compliance	01-NOV-1994	30-NOV-1994	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
4049	154377	SOX	State Compliance achieved	02-DEC-2019	State	MOR is reporting correctly. 12/2/19 LMK
4024	154320	SOX	State Compliance achieved	23-JUL-2013	State	-
3910	153710	SIE	State Public Notification requested	27-DEC-2009	State	-
3709	29998	SOX	State Compliance achieved	30-DEC-2008	State	6 months no MCL or MR violations. LRA 12/30/2008
3709	146395	SOX	State Compliance achieved	30-DEC-2008	State	6 months no MCL or MR violations. LRA 12/30/2008
3507	153607	SOX	State Compliance achieved	21-FEB-2007	State	Received CCR and CDF 2/16/07.
3106	152506	SOX	State Compliance achieved	14-FEB-2006	State	9/12/05
2705	149505	SOX	State Compliance achieved	26-AUG-2005	State	INACTIVATED SOURCE.
2705	149605	SOX	State Compliance achieved	26-AUG-2005	State	INACTIVATED SOURCE.
2705	149705	SOX	State Compliance achieved	26-AUG-2005	State	INACTIVATED SOURCE.
2705	149805	SOX	State Compliance achieved	26-AUG-2005	State	INACTIVATED SOURCE.
2705	149905	SOX	State Compliance achieved	26-AUG-2005	State	INACTIVATED SOURCE.
2705	150005	SOX	State Compliance achieved	26-AUG-2005	State	INACTIVATED SOURCE.
2705	150105	SOX	State Compliance achieved	26-AUG-2005	State	INACTIVATED SOURCE.
2705	150405	SOX	State Compliance achieved	26-AUG-2005	State	INACTIVATED SOURCE.
2705	150505	SOX	State Compliance achieved	26-AUG-2005	State	INACTIVATED SOURCE.
2705	150605	SOX	State Compliance achieved	26-AUG-2005	State	INACTIVATED SOURCE.
2705	150705	SOX	State Compliance achieved	26-AUG-2005	State	INACTIVATED SOURCE.
2705	150805	SOX	State Compliance achieved	26-AUG-2005	State	INACTIVATED SOURCE.
2705	151005	SOX	State Compliance achieved	26-AUG-2005	State	INACTIVATED SOURCE.
2705	151405	SOX	State Compliance achieved	26-AUG-2005	State	INACTIVATED SOURCE.
2705	151505	SOX	State Compliance achieved	26-AUG-2005	State	INACTIVATED SOURCE.
2705	151605	SOX	State Compliance achieved	26-AUG-2005	State	INACTIVATED SOURCE.
2705	151705	SOX	State Compliance achieved	26-AUG-2005	State	INACTIVATED SOURCE.
2705	151805	SOX	State Compliance achieved	26-AUG-2005	State	INACTIVATED SOURCE.
2705	152205	SOX	State Compliance achieved	26-AUG-2005	State	INACTIVATED SOURCE.
2705	149405	SOX	State Compliance achieved	26-AUG-2005	State	INACTIVATED SOURCE.
2705	149305	SOX	State Compliance achieved	26-AUG-2005	State	INACTIVATED SOURCE.
2705	149005	SOX	State Compliance achieved	26-AUG-2005	State	INACTIVATED SOURCE.
2705	148905	SOX	State Compliance achieved	26-AUG-2005	State	INACTIVATED SOURCE.
2705	148805	SOX	State Compliance achieved	26-AUG-2005	State	INACTIVATED SOURCE.
2705	148705	SOX	State Compliance achieved	26-AUG-2005	State	INACTIVATED SOURCE.
2705	148605	SOX	State Compliance achieved	26-AUG-2005	State	INACTIVATED SOURCE.
2705	150205	SOX	State Compliance achieved	26-AUG-2005	State	INACTIVATED SOURCE.
2005	147505	SIE	State Public Notification requested	03-JAN-2005	State	-
2405	147005	SIE	State Public Notification requested	03-JAN-2005	State	-
104	146502	SOX	State Compliance achieved	04-FEB-2004	State	-

1 - 37 of 37

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
INFILTRATION GALLERY 1	16249	Yes	Infiltration Gallery	Surface water	Permanent	Active
INFILTRATION GALLERY 2 S END OF TOWN	6700	Yes	Well	Ground water under the influence of surface water	Permanent	Inactive
INFILTRATION GALLERY 1	16926	Yes	Well	Ground water under the influence of surface water	Permanent	Inactive
INFILTRATION GALLERY 2	16250	Yes	Infiltration Gallery	Surface water	Permanent	Inactive
DISTRIBUTION SYSTEM	8550	No	Distribution System/Zone	-	-	Active
TRANSMISSION MAIN CONTACT BASIN	19381	No	Other	-	-	Inactive
STORAGE FACILITY 1 650,000 GAL	13857	No	Storage	-	-	Active
MEMBRANE WATER TREATMENT	21998	No	Treatment Plant	-	-	Active
TP FOR INFILT GALLERY 1	2796	No	Treatment Plant	-	-	Inactive
TP FOR INFILT GALLERY 2	2815	No	Treatment Plant	-	-	Inactive

1 - 10 of 10

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
MEMBRANE WATER TREATMENT	21998	Filtration, Ultrafiltration	Particulate removal
MEMBRANE WATER TREATMENT	21998	Gaseous Chlorination, Post	Disinfection
MEMBRANE WATER TREATMENT	21998	Inhibitor, Polyphosphate	Corrosion control
TP FOR INFILT GALLERY 1	2796	Gaseous Chlorination, Post	Disinfection
TP FOR INFILT GALLERY 2	2815	Gaseous Chlorination, Post	Disinfection

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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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