Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	MT0000305
PWS Name	PLAINS TOWN OF
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	1700
County Served	Sanders

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 2 Disinfectants and Disinfection Byproducts Rule	TTHM	1433930	Known	01-JAN-2025	31-DEC-2025	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	1433931	Known	01-JAN-2025	31-DEC-2025	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	1433406	Returned to Compliance	01-APR-2006	30-APR-2006	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	1433306	Returned to Compliance	01-NOV-2005	30-NOV-2005	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate-Nitrite	1411802	Returned to Compliance	01-JAN-2001	31-DEC-2001	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate-Nitrite	1411902	Returned to Compliance	01-JAN-2001	31-DEC-2001	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	1432802	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor epoxide	1426102	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor epoxide	1430402	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor	1430202	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor	1425902	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,3,7,8-TCDD	1430102	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,3,7,8-TCDD	1425802	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	LASSO	1425702	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	LASSO	1430002	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	1425602	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	1429902	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb	1429802	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb	1425502	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Carbofuran	1429702	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Carbofuran	1425402	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfone	1429502	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfone	1425202	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfoxide	1429402	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfoxide	1425102	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Hexachlorocyclopentadiene	1429302	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Hexachlorocyclopentadiene	1425002	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dinoseb	1429202	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dinoseb	1424902	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Picloram	1429102	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Picloram	1424802	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	1429002	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	1424702	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Simazine	1428902	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Simazine	1424602	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	OXAMYL	1428802	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	OXAMYL	1424502	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) adipate	1424402	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) adipate	1428702	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Glyphosate	1428602	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Glyphosate	1424302	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endothall	1424202	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endothall	1428502	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Diquat	1428402	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Diquat	1424102	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dalapon	1428302	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dalapon	1424002	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Toxaphene	1428002	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Toxaphene	1423702	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Methoxychlor	1427902	Returned to Compliance	01-JAN-1999	31-DEC-2001	No

1 - 50 of 126

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
5365626	1433931	SIE	State Public Notification requested	22-OCT-2025	State	-
5365626	1433930	SIE	State Public Notification requested	22-OCT-2025	State	-
5364306	1433306	SOX	State Compliance achieved	29-FEB-2008	State	6 consecutive mos with no MCL or monitoring violations. TK
5364606	1433406	SOX	State Compliance achieved	29-FEB-2008	State	6 consecutive mos with no MCL or monitoring violations. TK
5363504	1411696	SOX	State Compliance achieved	22-DEC-2003	State	7/27/94 sample
5363303	1411802	SOX	State Compliance achieved	03-DEC-2002	State	-
5363303	1411902	SOX	State Compliance achieved	03-DEC-2002	State	-
5363203	1425902	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1426102	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1426502	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1426602	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1426702	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1426802	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1426902	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1427102	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1427402	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1427502	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1427602	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1427702	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1427802	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1427902	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1428002	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1428302	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1428402	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1428502	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1428602	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1428702	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1428802	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1428902	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1429002	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1429102	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1429202	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1429302	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1429402	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1429502	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1429702	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1429802	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1429902	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1430002	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1430102	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1430202	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1430402	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1430802	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1430902	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1431002	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1431102	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1431202	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1431402	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1431702	SOX	State Compliance achieved	02-DEC-2002	State	-
5363203	1431802	SOX	State Compliance achieved	02-DEC-2002	State	-

1 - 50 of 126

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
BOYER CREEK SPRING	15138	Yes	Spring	Ground water under the influence of surface water	Seasonal	Inactive
BOYER CREEK SPRING	4594	Yes	Well	Ground water	Permanent	Inactive
CITY WELL 1 GWIC 75203	7537	Yes	Well	Ground water	Permanent	Active
BALCH WELL 2 GWIC 75130	4528	Yes	Well	Ground water	Permanent	Active
DISTRIBUTION SYSTEM	8280	No	Distribution System/Zone	-	-	Active
STORAGE FACILITY	57	No	Storage	-	-	Active
TP FOR CITY WELL 1	2560	No	Treatment Plant	-	-	Active
TP FOR BALCH WELL 2	2803	No	Treatment Plant	-	-	Active
TP FOR BOYER CREEK SPRING	2939	No	Treatment Plant	-	-	Inactive

1 - 9 of 9

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TP FOR CITY WELL 1	2560	Gaseous Chlorination, Post	Disinfection
TP FOR BALCH WELL 2	2803	Gaseous Chlorination, Post	Disinfection

1 - 2 of 2

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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