POLSON, MT · Lake County

POLSON CITY 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): MT0000308
System type: Community Water System
Population served: 5,300
Service connections: 2,566
Ownership: local government
Water source: groundwater (wells)

Violation history

Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
October 1, 2025 – October 6, 2025
Resolved
Monitoring, Regular
—
Nitrate-Nitrite
January 1, 2024 – December 31, 2024
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2008 – August 21, 2008
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Benzene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Toluene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Styrene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Nitrate-Nitrite
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Styrene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2000 – December 31, 2000
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2000 – December 31, 2000
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2000 – December 31, 2000
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2000 – December 31, 2000
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2000 – December 31, 2000
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2000 – December 31, 2000
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2000 – December 31, 2000
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2000 – December 31, 2000
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2000 – December 31, 2000
Resolved
Monitoring, Regular
—
Toluene
January 1, 2000 – December 31, 2000
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
May 1, 1995 – May 31, 1995
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
April 1, 1995 – April 30, 1995
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
April 1, 1995 – April 30, 1995
Resolved
Monitoring, Regular
—
Fluoride
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
Barium
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
Cadmium
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
CYANIDE
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
Chromium
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
Mercury
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
Cadmium
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
Barium
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
Nickel
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
CYANIDE
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
Antimony, Total
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
Selenium
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
Mercury
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
Chromium
January 1, 1993 – December 31, 1993
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
October 1, 2025 – October 6, 2025	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Nitrate-Nitrite	—	Resolved
July 1, 2008 – August 21, 2008	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Benzene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Toluene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Styrene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Nitrate-Nitrite	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Styrene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2000 – December 31, 2000	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2000 – December 31, 2000	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2000 – December 31, 2000	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2000 – December 31, 2000	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2000 – December 31, 2000	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2000 – December 31, 2000	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2000 – December 31, 2000	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2000 – December 31, 2000	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2000 – December 31, 2000	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2000 – December 31, 2000	Monitoring, Regular	Toluene	—	Resolved
May 1, 1995 – May 31, 1995	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
April 1, 1995 – April 30, 1995	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved
April 1, 1995 – April 30, 1995	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	Fluoride	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	Barium	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	Cadmium	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	CYANIDE	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	Chromium	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	Mercury	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	Cadmium	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	Barium	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	Thallium, Total	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	Nickel	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	CYANIDE	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	Beryllium, Total	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	Antimony, Total	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	Selenium	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	Mercury	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	Chromium	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

January 13, 2026State Public Notification requested1 linked violation
October 6, 2025State Violation/Reminder Notice1 linked violation
January 16, 2025State Public Notification requested1 linked violation
January 16, 2025State Compliance achieved1 linked violation
December 24, 2008State Compliance achieved17 linked violations
August 17, 2008State Public Notification requested1 linked violation
August 17, 2008State Violation/Reminder Notice1 linked violation
February 10, 2006State Public Notification requested136 linked violations
February 10, 2006State Public Notification requested3 linked violations
December 13, 2005State Compliance achieved2 linked violations
December 2, 2005State Public Notification requested2 linked violations

Contact

WALKER, ASHLEY R

406-883-8215

POLSON, MT 59860