CHESTER, MT · Liberty County

RIVERVIEW COLONY 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): MT0001777
System type: Community Water System
Population served: 130
Service connections: 13
Ownership: privately owned
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
July 1, 2023 – September 13, 2023
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
October 1, 2021 – October 31, 2021
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
April 1, 2021 – June 30, 2021
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
January 1, 2021 – March 31, 2021
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
October 1, 2020 – December 31, 2020
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
July 1, 2020 – September 30, 2020
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
April 1, 2020 – June 30, 2020
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
January 1, 2020 – March 31, 2020
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2020 – March 31, 2020
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
October 1, 2019 – December 31, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2019 – December 31, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2019 – September 30, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
April 1, 2019 – June 30, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2019 – June 30, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
January 1, 2019 – March 31, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
October 1, 2018 – December 31, 2018
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2015 – March 31, 2015
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2014 – December 31, 2014
Resolved
Failure to Filter (SWTR)
Health-based
Surface Water Treatment Rule
March 1, 2008 – February 14, 2014
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 2005 – July 31, 2005
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Benzene
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Styrene
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Toluene
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Arsenic
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Nickel
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Antimony, Total
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2004 – December 31, 2004
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
October 1, 1994 – October 31, 1994
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
May 1, 1992 – May 31, 1992
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
July 1, 2023 – September 13, 2023	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
October 1, 2021 – October 31, 2021	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
April 1, 2021 – June 30, 2021	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
January 1, 2021 – March 31, 2021	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
October 1, 2020 – December 31, 2020	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
July 1, 2020 – September 30, 2020	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
April 1, 2020 – June 30, 2020	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
January 1, 2020 – March 31, 2020	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
January 1, 2020 – March 31, 2020	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
October 1, 2019 – December 31, 2019	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
October 1, 2019 – December 31, 2019	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2019 – September 30, 2019	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
April 1, 2019 – June 30, 2019	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
April 1, 2019 – June 30, 2019	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2019 – March 31, 2019	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
October 1, 2018 – December 31, 2018	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
January 1, 2015 – March 31, 2015	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
October 1, 2014 – December 31, 2014	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
March 1, 2008 – February 14, 2014	Failure to Filter (SWTR)	Surface Water Treatment Rule	Health-based	Resolved
July 1, 2005 – July 31, 2005	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Benzene	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Styrene	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Toluene	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Arsenic	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Nickel	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Antimony, Total	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Beryllium, Total	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Thallium, Total	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Tetrachloroethylene	—	Resolved
October 1, 1994 – October 31, 1994	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
May 1, 1992 – May 31, 1992	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

September 13, 2023State Compliance achieved1 linked violation
September 13, 2023State Public Notification requested21 linked violations
September 13, 2023State Violation/Reminder Notice1 linked violation
December 2, 2021State Public Notification requested1 linked violation
December 2, 2021State Violation/Reminder Notice1 linked violation
November 8, 2021State Compliance achieved1 linked violation
August 12, 2021State Compliance achieved1 linked violation
August 12, 2021State Compliance achieved1 linked violation
August 12, 2021State Compliance achieved1 linked violation
August 12, 2021State Compliance achieved1 linked violation
August 12, 2021State Compliance achieved1 linked violation
August 12, 2021State Compliance achieved1 linked violation
August 12, 2021State Compliance achieved1 linked violation
August 12, 2021State Compliance achieved1 linked violation
August 12, 2021State Compliance achieved1 linked violation
August 12, 2021State Compliance achieved1 linked violation
August 12, 2021State Compliance achieved1 linked violation
May 26, 2021State Public Notification requested1 linked violation
May 26, 2021State Violation/Reminder Notice1 linked violation
March 19, 2021State Violation/Reminder Notice1 linked violation
March 19, 2021State Public Notification requested1 linked violation
December 8, 2020State Public Notification requested1 linked violation
December 8, 2020State Violation/Reminder Notice1 linked violation
September 1, 2020State Public Notification requested1 linked violation
September 1, 2020State Violation/Reminder Notice1 linked violation
June 11, 2020State Violation/Reminder Notice1 linked violation
June 11, 2020State Public Notification requested1 linked violation
May 20, 2020State Compliance achieved1 linked violation
May 20, 2020State Compliance achieved1 linked violation
May 20, 2020State Administrative/Compliance Order without penalty issued1 linked violation
May 20, 2020State Administrative/Compliance Order without penalty issued1 linked violation
May 20, 2020State Administrative/Compliance Order without penalty issued1 linked violation
May 20, 2020State Administrative/Compliance Order without penalty issued10 linked violations
May 20, 2020State Administrative/Compliance Order without penalty issued1 linked violation
May 20, 2020State Compliance achieved1 linked violation
May 20, 2020State Compliance achieved1 linked violation
May 20, 2020State Administrative/Compliance Order without penalty issued1 linked violation
May 20, 2020State Administrative/Compliance Order without penalty issued1 linked violation
March 4, 2020State Violation/Reminder Notice1 linked violation
March 4, 2020State Public Notification requested1 linked violation
March 4, 2020State Violation/Reminder Notice1 linked violation
March 4, 2020State Public Notification requested1 linked violation
December 16, 2019State Other8 linked violations
December 16, 2019State Other1 linked violation
December 16, 2019State Other1 linked violation
December 16, 2019State Other1 linked violation
December 16, 2019State Other2 linked violations
December 16, 2019State Other1 linked violation
December 16, 2019State Other1 linked violation
December 16, 2019State Other1 linked violation
December 2, 2019State Violation/Reminder Notice1 linked violation
December 2, 2019State Public Notification requested1 linked violation
December 2, 2019State Public Notification requested1 linked violation
December 2, 2019State Violation/Reminder Notice1 linked violation
September 9, 2019State Violation/Reminder Notice1 linked violation
September 9, 2019State Public Notification requested1 linked violation
September 9, 2019State Violation/Reminder Notice1 linked violation
September 9, 2019State Public Notification requested1 linked violation
May 24, 2019State Public Notification requested1 linked violation
May 24, 2019State Violation/Reminder Notice1 linked violation
May 24, 2019State Public Notification requested1 linked violation
May 24, 2019State Violation/Reminder Notice1 linked violation
February 25, 2019State Violation/Reminder Notice1 linked violation
February 25, 2019State Public Notification requested1 linked violation
November 27, 2018State Public Notification requested1 linked violation
November 27, 2018State Violation/Reminder Notice1 linked violation
May 12, 2015State Compliance achieved1 linked violation
May 12, 2015State Compliance achieved1 linked violation
April 20, 2015State Public Notification requested1 linked violation
April 20, 2015State Violation/Reminder Notice1 linked violation
January 20, 2015State Public Notification received1 linked violation
January 12, 2015State Public Notification requested1 linked violation
January 12, 2015State Violation/Reminder Notice1 linked violation
February 14, 2014State Compliance achieved1 linked violation
March 23, 2010State Administrative/Compliance Order without penalty issued1 linked violation
December 4, 2009State Public Notification requested1 linked violation
December 4, 2009State Other1 linked violation
December 4, 2009State Violation/Reminder Notice1 linked violation
May 29, 2009State Compliance achievedgeneral compliance action — not tied to a specific violation on record
May 29, 2009State Compliance achievedgeneral compliance action — not tied to a specific violation on record
May 15, 2009State Compliance achieved1 linked violation
May 15, 2009State Compliance achieved1 linked violation
May 15, 2009State Compliance achieved1 linked violation
May 15, 2009State Compliance achieved1 linked violation
May 15, 2009State Compliance achieved1 linked violation
May 15, 2009State Compliance achieved1 linked violation
May 15, 2009State Compliance achieved1 linked violation
May 15, 2009State Compliance achieved1 linked violation
May 15, 2009State Compliance achieved1 linked violation
May 15, 2009State Compliance achieved1 linked violation
August 30, 2005State Compliance achieved1 linked violation
August 30, 2005State Public Notification received1 linked violation
August 27, 2005State Public Notification requested1 linked violation
August 27, 2005State Violation/Reminder Notice1 linked violation
July 15, 2005State Violation/Reminder Notice21 linked violations
July 15, 2005State Public Notification requested21 linked violations
July 6, 2005State Compliance achieved26 linked violations
April 14, 2005State Public Notification requested4 linked violations
April 14, 2005State Violation/Reminder Notice4 linked violations
April 13, 2005State Violation/Reminder Notice1 linked violation
April 13, 2005State Public Notification requested1 linked violation
February 18, 2004State Compliance achieved1 linked violation
December 10, 2003State Compliance achieved1 linked violation
October 12, 2003State Violation/Reminder Notice1 linked violation
April 3, 1999State Public Notification requested1 linked violation
April 3, 1999State Violation/Reminder Notice1 linked violation
December 3, 1996State Formal Notice of Violation issued6 linked violations
December 29, 1995State Violation/Reminder Notice1 linked violation
January 23, 1992State Violation/Reminder Notice1 linked violation

Contact

WIPF, JOHN J

406-456-3338

CHESTER, MT 59522