HARDIN, MT · Big Horn County

HARDIN 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): MT0000235
System type: Community Water System
Population served: 3,500
Service connections: 1,307
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
April 1, 2025 – June 30, 2025
Resolved
Monitoring and Reporting (DBP)
—
TTHM
April 1, 2025 – June 30, 2025
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
September 1, 2020 – August 31, 2021
Resolved
Monitoring and Reporting (DBP)
—
TTHM
September 1, 2020 – August 31, 2021
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
January 1, 2014 – January 27, 2014
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2013 – July 18, 2013
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2012 – August 20, 2012
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2010 – July 27, 2010
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
July 1, 2004 – September 30, 2004
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
July 1, 2004 – September 30, 2004
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
July 1, 2004 – September 30, 2004
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
July 1, 2004 – September 30, 2004
Resolved
Monitoring, Regular
—
Asbestos
January 1, 2002 – December 31, 2010
Archived
Monitoring, Regular
—
Arsenic
January 1, 2000 – December 31, 2000
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
January 1, 1996 – January 31, 1996
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
April 1, 1995 – April 30, 1995
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
February 1, 1995 – February 28, 1995
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
December 1, 1994 – December 31, 1994
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
October 1, 1994 – October 31, 1994
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
August 1, 1994 – August 31, 1994
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
May 1, 1994 – May 31, 1994
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
April 1, 1994 – April 30, 1994
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
March 1, 1994 – March 31, 1994
Resolved
Monitoring, Regular
—
CYANIDE
January 1, 1994 – December 31, 1994
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
April 1, 2025 – June 30, 2025	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring and Reporting (DBP)	TTHM	—	Resolved
September 1, 2020 – August 31, 2021	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
September 1, 2020 – August 31, 2021	Monitoring and Reporting (DBP)	TTHM	—	Resolved
January 1, 2014 – January 27, 2014	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
July 1, 2013 – July 18, 2013	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2012 – August 20, 2012	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2010 – July 27, 2010	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2004 – September 30, 2004	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
July 1, 2004 – September 30, 2004	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
July 1, 2004 – September 30, 2004	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
July 1, 2004 – September 30, 2004	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
January 1, 2002 – December 31, 2010	Monitoring, Regular	Asbestos	—	Archived
January 1, 2000 – December 31, 2000	Monitoring, Regular	Arsenic	—	Resolved
January 1, 1996 – January 31, 1996	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
April 1, 1995 – April 30, 1995	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
February 1, 1995 – February 28, 1995	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
December 1, 1994 – December 31, 1994	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
October 1, 1994 – October 31, 1994	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
August 1, 1994 – August 31, 1994	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
May 1, 1994 – May 31, 1994	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
April 1, 1994 – April 30, 1994	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
March 1, 1994 – March 31, 1994	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	CYANIDE	—	Resolved

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

Enforcement actions

November 5, 2025State Public Notification received2 linked violations
July 14, 2025State Compliance achieved3 linked violations
July 14, 2025State Public Notification requested2 linked violations
July 14, 2025State Violation/Reminder Notice2 linked violations
October 28, 2021State Compliance achieved2 linked violations
January 27, 2014State Compliance achieved2 linked violations
January 23, 2014State Violation/Reminder Notice1 linked violation
July 18, 2013State Compliance achieved1 linked violation
July 12, 2012State Public Notification requested3 linked violations
August 7, 2010State Public Notification requested2 linked violations
July 27, 2010State Compliance achieved2 linked violations
January 6, 2009State Compliance achieved5 linked violations
November 7, 2008State no additional Formal Action needed1 linked violation
November 6, 2006State Compliance achieved3 linked violations
November 6, 2006State Compliance achieved1 linked violation
February 24, 2005State Violation/Reminder Notice14 linked violations
December 2, 2002State Compliance achieved4 linked violations

Contact

HURFF JR, MICHAEL D

406-665-9260

HARDIN, MT 59034