WINNETT, MT · Petroleum County

WINNETT TOWN OF Water System

Current status

No open violations on record as of July 4, 2026.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace Montana’s official records. Always confirm current status with Montana before making decisions based on this information.

System facts

System ID (PWSID): MT0000364
System type: Community Water System
Population served: 187
Service connections: 138
Ownership: local government
Water source: groundwater (wells)

Violation history

Monitoring, Regular
—
Nitrate-Nitrite
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Hexachlorocyclopentadiene
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Xylenes, Total
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Barium
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Chromium
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Nickel
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Antimony, Total
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
BHC-GAMMA
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Dalapon
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Simazine
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Benzene
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Styrene
January 1, 2020 – December 30, 2022
Resolved
Monitoring, Regular
—
Endrin
January 1, 2020 – December 30, 2022
Resolved
Monitoring, Regular
—
Toxaphene
January 1, 2020 – December 30, 2022
Resolved
Monitoring, Regular
—
OXAMYL
January 1, 2020 – December 30, 2022
Resolved
Monitoring, Regular
—
Atrazine
January 1, 2020 – December 30, 2022
Resolved
Monitoring, Regular
—
LASSO
January 1, 2020 – December 30, 2022
Resolved
Monitoring, Regular
—
2,4,5-TP
January 1, 2020 – December 30, 2022
Resolved
Monitoring, Regular
—
Heptachlor epoxide
January 1, 2020 – December 30, 2022
Resolved
Monitoring, Regular
—
Chromium
January 1, 2020 – August 22, 2022
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 2020 – August 22, 2022
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 2020 – August 22, 2022
Resolved
Monitoring, Regular
—
Selenium
January 1, 2020 – August 22, 2022
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
January 1, 2020 – December 30, 2022
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2020 – December 30, 2022
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2020 – December 30, 2022
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2020 – December 30, 2022
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2020 – December 30, 2022
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2020 – December 30, 2022
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2020 – December 30, 2022
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2020 – December 30, 2022
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2020 – December 30, 2022
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2020 – December 30, 2022
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2020 – December 30, 2022
Resolved
Monitoring, Regular
—
Toluene
January 1, 2020 – December 30, 2022
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2020 – December 30, 2022
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2018 – August 9, 2018
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
October 1, 2012 – November 21, 2012
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2012 – July 6, 2012
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
October 1, 2011 – June 6, 2013
Resolved
Monitoring, Regular
—
Mercury
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
Selenium
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
Fluoride
January 1, 2011 – December 31, 2013
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2006 – October 22, 2008
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 1999 – July 31, 1999
Resolved

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Period	Violation	Contaminant / rule	Health-based	Status
January 1, 2024 – December 31, 2024	Monitoring, Regular	Nitrate-Nitrite	—	Resolved
January 1, 2023 – December 31, 2025	Monitoring, Regular	CHLOROBENZENE	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	1,1,1-Trichloroethane	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	1,2-Dichloroethane	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	1,1-Dichloroethylene	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	DICHLOROMETHANE	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Hexachlorocyclopentadiene	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Xylenes, Total	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Barium	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Chromium	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Nickel	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Antimony, Total	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	BHC-GAMMA	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Dalapon	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Simazine	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Benzene	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Archived
January 1, 2020 – December 30, 2022	Monitoring, Regular	Styrene	—	Resolved
January 1, 2020 – December 30, 2022	Monitoring, Regular	Endrin	—	Resolved
January 1, 2020 – December 30, 2022	Monitoring, Regular	Toxaphene	—	Resolved
January 1, 2020 – December 30, 2022	Monitoring, Regular	OXAMYL	—	Resolved
January 1, 2020 – December 30, 2022	Monitoring, Regular	Atrazine	—	Resolved
January 1, 2020 – December 30, 2022	Monitoring, Regular	LASSO	—	Resolved
January 1, 2020 – December 30, 2022	Monitoring, Regular	2,4,5-TP	—	Resolved
January 1, 2020 – December 30, 2022	Monitoring, Regular	Heptachlor epoxide	—	Resolved
January 1, 2020 – August 22, 2022	Monitoring, Regular	Chromium	—	Resolved
January 1, 2020 – August 22, 2022	Monitoring, Regular	Beryllium, Total	—	Resolved
January 1, 2020 – August 22, 2022	Monitoring, Regular	Thallium, Total	—	Resolved
January 1, 2020 – August 22, 2022	Monitoring, Regular	Selenium	—	Resolved
January 1, 2020 – December 30, 2022	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
January 1, 2020 – December 30, 2022	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2020 – December 30, 2022	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2020 – December 30, 2022	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2020 – December 30, 2022	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2020 – December 30, 2022	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2020 – December 30, 2022	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2020 – December 30, 2022	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2020 – December 30, 2022	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2020 – December 30, 2022	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2020 – December 30, 2022	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2020 – December 30, 2022	Monitoring, Regular	Toluene	—	Resolved
January 1, 2020 – December 30, 2022	Monitoring, Regular	Ethylbenzene	—	Resolved
July 1, 2018 – August 9, 2018	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
October 1, 2012 – November 21, 2012	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
July 1, 2012 – July 6, 2012	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
October 1, 2011 – June 6, 2013	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Mercury	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Selenium	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Fluoride	—	Resolved
July 1, 2006 – October 22, 2008	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 1999 – July 31, 1999	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

January 24, 2026State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
January 24, 2026State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
January 23, 2026State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
January 23, 2026State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
January 22, 2026State Violation/Reminder Notice6 linked violations
January 22, 2026State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
January 22, 2026State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
January 22, 2026State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
November 5, 2025State Public Notification received2 linked violations
October 24, 2025State Public Notification requested1 linked violation
October 24, 2025State Violation/Reminder Notice1 linked violation
October 22, 2025State Public Notification requested2 linked violations
October 22, 2025State Violation/Reminder Notice2 linked violations
January 27, 2025State Compliance achieved1 linked violation
January 27, 2025State Public Notification received1 linked violation
January 23, 2025State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
January 16, 2025State Public Notification requested1 linked violation
January 16, 2025State Violation/Reminder Notice1 linked violation
January 15, 2025State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
January 15, 2025State Compliance achievedgeneral compliance action — not tied to a specific violation on record
January 15, 2025State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
August 5, 2024State Compliance achieved1 linked violation
July 23, 2024State Violation/Reminder Notice1 linked violation
January 29, 2023State Public Notification requested23 linked violations
January 29, 2023State Violation/Reminder Notice1 linked violation
January 29, 2023State Public Notification requested1 linked violation
January 29, 2023State Violation/Reminder Notice21 linked violations
January 29, 2023State Public Notification requested21 linked violations
January 29, 2023State Violation/Reminder Notice23 linked violations
January 29, 2023State Public Notification requested23 linked violations
January 29, 2023State Violation/Reminder Notice4 linked violations
January 29, 2023State Public Notification requested1 linked violation
January 29, 2023State Violation/Reminder Notice21 linked violations
January 29, 2023State Public Notification requested21 linked violations
January 29, 2023State Violation/Reminder Notice23 linked violations
January 29, 2023State Public Notification requested23 linked violations
January 29, 2023State Violation/Reminder Notice1 linked violation
January 29, 2023State Public Notification requested1 linked violation
January 29, 2023State Violation/Reminder Notice21 linked violations
January 29, 2023State Public Notification requested21 linked violations
January 29, 2023State Violation/Reminder Notice23 linked violations
January 29, 2023State Public Notification requested23 linked violations
January 29, 2023State Violation/Reminder Notice1 linked violation
January 29, 2023State Public Notification requested1 linked violation
January 29, 2023State Violation/Reminder Notice21 linked violations
January 29, 2023State Public Notification requested21 linked violations
January 29, 2023State Violation/Reminder Notice23 linked violations
January 29, 2023State Violation/Reminder Notice23 linked violations
January 29, 2023State Public Notification requested23 linked violations
January 29, 2023State Violation/Reminder Notice1 linked violation
January 29, 2023State Public Notification requested1 linked violation
January 29, 2023State Violation/Reminder Notice21 linked violations
January 29, 2023State Public Notification requested21 linked violations
January 29, 2023State Violation/Reminder Notice23 linked violations
January 29, 2023State Public Notification requested23 linked violations
January 29, 2023State Violation/Reminder Notice1 linked violation
January 29, 2023State Public Notification requested1 linked violation
January 29, 2023State Violation/Reminder Notice21 linked violations
January 29, 2023State Public Notification requested21 linked violations
January 29, 2023State Violation/Reminder Notice23 linked violations
January 29, 2023State Public Notification requested23 linked violations
January 25, 2023State Public Notification requested10 linked violations
January 25, 2023State Violation/Reminder Notice10 linked violations
December 30, 2022State Compliance achieved23 linked violations
December 30, 2022State Compliance achieved21 linked violations
December 30, 2022State Compliance achieved21 linked violations
December 30, 2022State Compliance achieved1 linked violation
December 30, 2022State Compliance achieved1 linked violation
December 30, 2022State Compliance achieved21 linked violations
December 30, 2022State Compliance achieved1 linked violation
December 30, 2022State Compliance achieved23 linked violations
December 30, 2022State Compliance achieved23 linked violations
December 30, 2022State Compliance achieved23 linked violations
December 30, 2022State Compliance achieved23 linked violations
December 30, 2022State Compliance achieved21 linked violations
December 30, 2022State Compliance achieved1 linked violation
December 30, 2022State Compliance achieved2 linked violations
December 30, 2022State Compliance achieved21 linked violations
December 30, 2022State Compliance achieved21 linked violations
December 30, 2022State Compliance achieved23 linked violations
December 30, 2022State Compliance achieved1 linked violation
December 30, 2022State Compliance achieved23 linked violations
August 22, 2022State Compliance achieved10 linked violations
August 15, 2019State Compliance achieved2 linked violations
July 29, 2019State Compliance achieved1 linked violation
July 17, 2019State Violation/Reminder Notice1 linked violation
October 19, 2018State Violation/Reminder Notice2 linked violations
October 19, 2018State Public Notification requested2 linked violations
August 9, 2018State Compliance achieved1 linked violation
July 17, 2018State Violation/Reminder Notice1 linked violation
December 9, 2016State Compliance achieved6 linked violations
February 1, 2016State Compliance achieved1 linked violation
February 1, 2016State Violation/Reminder Notice1 linked violation
January 24, 2014State Violation/Reminder Notice6 linked violations
January 24, 2014State Public Notification requested6 linked violations
August 16, 2013State Compliance achieved1 linked violation
July 16, 2013State Violation/Reminder Notice1 linked violation
June 6, 2013State Compliance achieved2 linked violations
January 18, 2013State Public Notification requested1 linked violation
January 18, 2013State Violation/Reminder Notice1 linked violation
January 14, 2013State Violation/Reminder Notice1 linked violation
January 14, 2013State Compliance achieved1 linked violation
January 10, 2013State Compliance achieved1 linked violation
November 21, 2012State Compliance achieved1 linked violation
November 14, 2012State Violation/Reminder Notice1 linked violation
July 6, 2012State Compliance achieved1 linked violation
December 14, 2011State Public Notification requested1 linked violation
December 14, 2011State Violation/Reminder Notice1 linked violation
December 14, 2011State Public Notification requested1 linked violation
December 14, 2011State Violation/Reminder Notice1 linked violation
August 7, 2010State Public Notification requested1 linked violation
August 7, 2010State Violation/Reminder Notice1 linked violation
July 29, 2010State Compliance achieved1 linked violation
May 15, 2009State Compliance achieved1 linked violation
May 15, 2009State Compliance achieved1 linked violation
October 22, 2008State Compliance achieved1 linked violation
September 24, 2008State no additional Formal Action needed1 linked violation
September 2, 2008State no additional Formal Action needed1 linked violation
August 25, 2008State Compliance achieved1 linked violation
August 17, 2008State Public Notification requested1 linked violation
August 17, 2008State Violation/Reminder Notice1 linked violation
February 5, 2007State Violation/Reminder Notice1 linked violation
April 4, 2006State Compliance achieved2 linked violations
February 24, 2005State Public Notification requested2 linked violations
February 24, 2005State Violation/Reminder Notice2 linked violations
December 31, 2000State Violation/Reminder Notice1 linked violation
December 31, 2000State Violation/Reminder Notice2 linked violations

Contact

MOORE, SAVANNAH

406-429-5451

WINNETT, MT 59087