CORVALLIS, MT · Ravalli County

BIG SKY DRINKING WATER INC Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of March 3, 2004. It is no longer an operating public water system under this PWSID, and no compliance deadlines — including the 2027 Consumer Confidence Report rule — apply to it.

If you are a resident looking for your current water provider, see water systems in Ravalli County, MT.

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): MT0003371
System type: Community Water System
Population served: 3,025
Service connections: 3
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Monitoring, Routine Major (TCR)
—
Coliform (TCR)
January 1, 2004 – January 31, 2004
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 2002 – October 31, 2002
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
September 1, 2002 – September 30, 2002
Resolved
Monitoring, Regular
—
2,4,5-TP
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Dinoseb
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Arsenic
January 1, 2002 – March 3, 2004
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Nitrate-Nitrite
January 1, 2002 – December 31, 2002
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 1999 – April 30, 1999
Archived
Monitoring, Regular
—
Dinoseb
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
2,4,5-TP
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Nickel
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Picloram
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Styrene
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Nitrate
January 1, 1999 – December 31, 1999
Resolved
Monitoring, Regular
—
Nitrate
January 1, 1998 – December 31, 1998
Resolved
Monitoring, Regular
—
Dinoseb
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
Dalapon
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
Picloram
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
Nickel
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
2,4-D
January 1, 1996 – December 31, 1998
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, 2004 – January 31, 2004	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
October 1, 2002 – October 31, 2002	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
September 1, 2002 – September 30, 2002	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	2,4,5-TP	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Dinoseb	—	Resolved
January 1, 2002 – March 3, 2004	Monitoring, Regular	Arsenic	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Beryllium, Total	—	Resolved
January 1, 2002 – December 31, 2002	Monitoring, Regular	Nitrate-Nitrite	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Thallium, Total	—	Resolved
April 1, 1999 – April 30, 1999	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
January 1, 1999 – December 31, 2001	Monitoring, Regular	Dinoseb	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	2,4,5-TP	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Nickel	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Beryllium, Total	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Thallium, Total	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Picloram	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Styrene	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 1999 – December 31, 1999	Monitoring, Regular	Nitrate	—	Resolved
January 1, 1998 – December 31, 1998	Monitoring, Regular	Nitrate	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Dinoseb	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Dalapon	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Picloram	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Nickel	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Beryllium, Total	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	2,4-D	—	Resolved

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

Enforcement actions

January 12, 2005State Compliance achieved13 linked violations
January 4, 2005State Public Notification requested2 linked violations
September 20, 2004State Compliance achieved1 linked violation
February 23, 2004State Public Notification requested2 linked violations
February 23, 2004State Violation/Reminder Notice6 linked violations
December 10, 2003State Compliance achieved1 linked violation
October 12, 2003State Violation/Reminder Notice1 linked violation
May 22, 2003State Compliance achieved43 linked violations
December 11, 2002State Compliance achieved2 linked violations
November 22, 2002State Public Notification requested1 linked violation
October 24, 2002State Public Notification requested1 linked violation
July 21, 2002State Violation/Reminder Notice2 linked violations
July 12, 2002State Public Notification requested6 linked violations
July 5, 2002State Public Notification requested9 linked violations
July 5, 2002State Violation/Reminder Notice8 linked violations
June 28, 2000State Compliance achieved5 linked violations
August 24, 1999State Violation/Reminder Notice2 linked violations

Last known contact on file (system is inactive)

Not on record

406-961-4450

CORVALLIS, MT 59828