MILES CITY, MT · Custer County

MILES CITY 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): MT0000291
System type: Community Water System
Population served: 9,565
Service connections: 3,724
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Monitoring of Treatment (SWTR-Filter)
—
Long Term 2 Enhanced Surface Water Treatment Rule
August 1, 2025 – August 31, 2025
Archived
Monitoring of Treatment (SWTR-Filter)
—
Long Term 2 Enhanced Surface Water Treatment Rule
July 1, 2025 – July 31, 2025
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
August 1, 2023 – August 31, 2023
Archived
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
December 1, 2022 – December 31, 2022
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
September 1, 2022 – September 30, 2022
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
August 1, 2022 – August 31, 2022
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2018 – July 20, 2018
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 2005 – August 31, 2005
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
January 1, 1998 – January 31, 1998
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 1997 – December 31, 1997
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 1997 – December 31, 1997
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 1997 – December 31, 1997
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 1997 – December 31, 1997
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
February 1, 1996 – February 29, 1996
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
May 1, 1995 – May 31, 1995
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 1994 – August 31, 1994
Resolved
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
August 1, 1994 – August 31, 1994
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
May 1, 1994 – May 31, 1994
Resolved

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

Period	Violation	Contaminant / rule	Health-based	Status
August 1, 2025 – August 31, 2025	Monitoring of Treatment (SWTR-Filter)	Long Term 2 Enhanced Surface Water Treatment Rule	—	Archived
July 1, 2025 – July 31, 2025	Monitoring of Treatment (SWTR-Filter)	Long Term 2 Enhanced Surface Water Treatment Rule	—	Archived
August 1, 2023 – August 31, 2023	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
December 1, 2022 – December 31, 2022	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
September 1, 2022 – September 30, 2022	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
August 1, 2022 – August 31, 2022	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
July 1, 2018 – July 20, 2018	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
August 1, 2005 – August 31, 2005	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 1998 – January 31, 1998	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
January 1, 1997 – December 31, 1997	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 1997 – December 31, 1997	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 1997 – December 31, 1997	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 1997 – December 31, 1997	Monitoring, Regular	Carbon tetrachloride	—	Resolved
February 1, 1996 – February 29, 1996	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
May 1, 1995 – May 31, 1995	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
August 1, 1994 – August 31, 1994	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
August 1, 1994 – August 31, 1994	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Resolved
May 1, 1994 – May 31, 1994	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved

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

Enforcement actions

September 17, 2025State Public Notification requested1 linked violation
September 17, 2025State Violation/Reminder Notice1 linked violation
September 17, 2025State Public Notification requested1 linked violation
September 17, 2025State Violation/Reminder Notice1 linked violation
March 13, 2024State Administrative/Compliance Order without penalty issued1 linked violation
October 10, 2023State Other1 linked violation
August 22, 2023State Violation/Reminder Notice1 linked violation
August 22, 2023State Public Notification received1 linked violation
August 22, 2023State Public Notification requested1 linked violation
August 22, 2023State Compliance achieved1 linked violation
February 16, 2023State Violation/Reminder Notice1 linked violation
February 16, 2023State Public Notification requested1 linked violation
February 16, 2023State Public Notification received1 linked violation
February 16, 2023State Compliance achieved1 linked violation
September 30, 2022State Violation/Reminder Notice1 linked violation
September 30, 2022State Compliance achieved1 linked violation
September 30, 2022State Public Notification requested1 linked violation
September 30, 2022State Public Notification received1 linked violation
September 2, 2022State Compliance achieved1 linked violation
September 2, 2022State Violation/Reminder Notice1 linked violation
September 2, 2022State Public Notification received1 linked violation
September 2, 2022State Public Notification requested1 linked violation
July 20, 2018State Compliance achieved1 linked violation
July 17, 2018State Violation/Reminder Notice1 linked violation
January 7, 2009State Compliance achieved9 linked violations
December 31, 2008State Compliance achieved21 linked violations
August 12, 2005State Violation/Reminder Notice2 linked violations
May 15, 2001State Compliance achieved20 linked violations
June 1, 1996State Compliance achieved3 linked violations

Contact

SPEELMON, THOMAS A

406-234-1905

MILES CITY, MT 59301