Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	MT0000060
PWS Name	BIG MOUNTAIN WATER COMPANY
PWS Type	Community water system
Owner Type	Private
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	2435
County Served	Flathead

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, Regular	Synthetic Organic Chemicals	Endrin	5525264	Returned to Compliance	01-JAN-2024	31-MAR-2024	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	BHC-GAMMA	5525265	Returned to Compliance	01-JAN-2024	31-MAR-2024	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Pentachlorophenol	5525285	Returned to Compliance	01-JAN-2024	31-MAR-2024	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Benzo(a)pyrene	5525284	Returned to Compliance	01-JAN-2024	31-MAR-2024	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	HEXACHLOROBENZENE	5525283	Returned to Compliance	01-JAN-2024	31-MAR-2024	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	5525282	Returned to Compliance	01-JAN-2024	31-MAR-2024	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	5525281	Returned to Compliance	01-JAN-2024	31-MAR-2024	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor epoxide	5525280	Returned to Compliance	01-JAN-2024	31-MAR-2024	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor	5525279	Returned to Compliance	01-JAN-2024	31-MAR-2024	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	LASSO	5525278	Returned to Compliance	01-JAN-2024	31-MAR-2024	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	5525277	Returned to Compliance	01-JAN-2024	31-MAR-2024	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Carbofuran	5525276	Returned to Compliance	01-JAN-2024	31-MAR-2024	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Hexachlorocyclopentadiene	5525275	Returned to Compliance	01-JAN-2024	31-MAR-2024	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dinoseb	5525274	Returned to Compliance	01-JAN-2024	31-MAR-2024	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Picloram	5525273	Returned to Compliance	01-JAN-2024	31-MAR-2024	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	5525272	Returned to Compliance	01-JAN-2024	31-MAR-2024	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Simazine	5525271	Returned to Compliance	01-JAN-2024	31-MAR-2024	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	OXAMYL	5525270	Returned to Compliance	01-JAN-2024	31-MAR-2024	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) adipate	5525269	Returned to Compliance	01-JAN-2024	31-MAR-2024	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dalapon	5525268	Returned to Compliance	01-JAN-2024	31-MAR-2024	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Toxaphene	5525267	Returned to Compliance	01-JAN-2024	31-MAR-2024	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Methoxychlor	5525266	Returned to Compliance	01-JAN-2024	31-MAR-2024	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Chlordane	5525286	Returned to Compliance	01-JAN-2024	31-MAR-2024	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	5525263	Returned to Compliance	01-OCT-2014	31-OCT-2014	Yes
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	5525261	Returned to Compliance	01-APR-2014	30-JUN-2014	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	5525262	Returned to Compliance	01-APR-2014	30-JUN-2014	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	5525255	Returned to Compliance	01-JUL-2012	31-JUL-2012	No
MR	Monitoring, Regular	Inorganic Chemicals	Asbestos	5525260	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	5525109	Returned to Compliance	01-JAN-2009	31-MAR-2009	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	5522808	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	5524808	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	5522908	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	5523008	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	5523108	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	5523208	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	5523308	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	5523408	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	5523508	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	5523608	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	5523708	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	5523808	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	5523908	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	5524008	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	5524108	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	5524208	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	5524308	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	5524408	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	5524508	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	5524608	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	5524708	Returned to Compliance	01-APR-2008	30-JUN-2008	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
413940	5525286	SIE	State Public Notification requested	22-JAN-2026	State	-
413940	5525283	SIE	State Public Notification requested	22-JAN-2026	State	-
413940	5525284	SIE	State Public Notification requested	22-JAN-2026	State	-
413940	5525264	SIE	State Public Notification requested	22-JAN-2026	State	-
413940	5525265	SIE	State Public Notification requested	22-JAN-2026	State	-
413940	5525266	SIE	State Public Notification requested	22-JAN-2026	State	-
413940	5525267	SIE	State Public Notification requested	22-JAN-2026	State	-
413940	5525268	SIE	State Public Notification requested	22-JAN-2026	State	-
413940	5525269	SIE	State Public Notification requested	22-JAN-2026	State	-
413940	5525270	SIE	State Public Notification requested	22-JAN-2026	State	-
413940	5525271	SIE	State Public Notification requested	22-JAN-2026	State	-
413940	5525272	SIE	State Public Notification requested	22-JAN-2026	State	-
413940	5525273	SIE	State Public Notification requested	22-JAN-2026	State	-
413940	5525274	SIE	State Public Notification requested	22-JAN-2026	State	-
413940	5525275	SIE	State Public Notification requested	22-JAN-2026	State	-
413940	5525276	SIE	State Public Notification requested	22-JAN-2026	State	-
413940	5525277	SIE	State Public Notification requested	22-JAN-2026	State	-
413940	5525278	SIE	State Public Notification requested	22-JAN-2026	State	-
413940	5525279	SIE	State Public Notification requested	22-JAN-2026	State	-
413940	5525280	SIE	State Public Notification requested	22-JAN-2026	State	-
413940	5525281	SIE	State Public Notification requested	22-JAN-2026	State	-
413940	5525282	SIE	State Public Notification requested	22-JAN-2026	State	-
413940	5525285	SIE	State Public Notification requested	22-JAN-2026	State	-
413936	5525263	SIF	State Public Notification received	11-NOV-2014	State	-
413927	5525261	SIE	State Public Notification requested	15-JUL-2014	State	-
413930	5525262	SIE	State Public Notification requested	15-JUL-2014	State	-
413925	5525260	SIF	State Public Notification received	10-MAR-2014	State	-
413919	5525255	SIE	State Public Notification requested	15-AUG-2012	State	-
413909	5525109	SOX	State Compliance achieved	14-JUL-2009	State	-
413609	5500096	SOX	State Compliance achieved	24-DEC-2008	State	6 months no MCL or MR violations. LRA 12/24/2008
413609	5345096	SOX	State Compliance achieved	24-DEC-2008	State	6 months no MCL or MR violations. LRA 12/24/2008
413609	5344996	SOX	State Compliance achieved	24-DEC-2008	State	6 months no MCL or MR violations. LRA 12/24/2008
413609	5264996	SOX	State Compliance achieved	24-DEC-2008	State	6 months no MCL or MR violations. LRA 12/24/2008
413609	452095	SOX	State Compliance achieved	24-DEC-2008	State	6 months no MCL or MR violations. LRA 12/24/2008
413609	451595	SOX	State Compliance achieved	24-DEC-2008	State	6 months no MCL or MR violations. LRA 12/24/2008
413609	170398	SOX	State Compliance achieved	24-DEC-2008	State	6 months no MCL or MR violations. LRA 12/24/2008
413609	108295	SOX	State Compliance achieved	24-DEC-2008	State	6 months no MCL or MR violations. LRA 12/24/2008
413108	5523708	SOX	State Compliance achieved	08-AUG-2008	State	6/23/08 sample received late
413108	5522908	SOX	State Compliance achieved	08-AUG-2008	State	6/23/08 sample received late
413108	5523908	SOX	State Compliance achieved	08-AUG-2008	State	6/23/08 sample received late
413108	5524008	SOX	State Compliance achieved	08-AUG-2008	State	6/23/08 sample received late
413108	5524108	SOX	State Compliance achieved	08-AUG-2008	State	6/23/08 sample received late
413108	5524208	SOX	State Compliance achieved	08-AUG-2008	State	6/23/08 sample received late
413108	5524308	SOX	State Compliance achieved	08-AUG-2008	State	6/23/08 sample received late
413108	5524408	SOX	State Compliance achieved	08-AUG-2008	State	6/23/08 sample received late
413108	5524508	SOX	State Compliance achieved	08-AUG-2008	State	6/23/08 sample received late
413108	5524608	SOX	State Compliance achieved	08-AUG-2008	State	6/23/08 sample received late
413108	5524708	SOX	State Compliance achieved	08-AUG-2008	State	6/23/08 sample received late
413108	5524808	SOX	State Compliance achieved	08-AUG-2008	State	6/23/08 sample received late
413108	5522808	SOX	State Compliance achieved	08-AUG-2008	State	6/23/08 sample received late

1 - 50 of 165

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WELL 4 2004 HAILEYS RUN GWIC 209330	16058	Yes	Well	Ground water	Permanent	Active
WELL 2 1983 ALPINE LODGE GWIC 88014	6075	Yes	Well	Ground water	Permanent	Active
WELL 1 1975 CHALET GWIC 88013	6074	Yes	Well	Ground water	Permanent	Active
WELL 3 1994 SUNRISE RIDGE GWIC 146323	5397	Yes	Well	Ground water	Permanent	Active
WELL 6 2021 N LIGHTS 3 GWIC 316598	24270	Yes	Well	Ground water	Permanent	Active
WELL 5 2007 NORTHERN LIGHTS GWIC 234814	18760	Yes	Well	Ground water	Permanent	Active
DISTRIBUTION SYSTEM	9365	No	Distribution System/Zone	-	-	Active
BOOSTER STATION NOTHERN LIGHTS WEST PHA2	22127	No	Pressure Control	-	-	Active
STORAGE FACILITY #3 1996 300,000 GAL	12457	No	Storage	-	-	Active
STORAGE FACILITY #2 1985 500,000 GAL	1501	No	Storage	-	-	Active
STORAGE TANK #1 300,000 GAL	18348	No	Storage	-	-	Active

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Treatment Processes

No treatment process(es) found. EPA has no record of treatment process(es) reported by the primacy agency for this water system.

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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