WEST YELLOWSTONE, MT · Gallatin County

YELLOWSTONE HOLIDAY WTR AND SEW DISTRICT 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): MT0001326
System type: Community Water System
Population served: 85
Service connections: 34
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2016 – October 24, 2016
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 2012 – April 11, 2012
Resolved
Monitoring, Regular
—
Aldicarb sulfoxide
January 1, 2008 – December 31, 2010
Archived
Monitoring, Regular
—
2,4,5-TP
January 1, 2008 – December 31, 2010
Archived
Monitoring, Regular
—
HEXACHLOROBENZENE
January 1, 2008 – December 31, 2010
Archived
Monitoring, Regular
—
Benzo(a)pyrene
January 1, 2008 – December 31, 2010
Archived
Monitoring, Regular
—
Pentachlorophenol
January 1, 2008 – December 31, 2010
Archived
Monitoring, Regular
—
Chlordane
January 1, 2008 – December 31, 2010
Archived
Monitoring, Regular
—
Endrin
January 1, 2008 – December 31, 2010
Archived
Monitoring, Regular
—
Methoxychlor
January 1, 2008 – December 31, 2010
Archived
Monitoring, Regular
—
Toxaphene
January 1, 2008 – December 31, 2010
Archived
Monitoring, Regular
—
Dalapon
January 1, 2008 – December 31, 2010
Archived
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
January 1, 2008 – December 31, 2010
Archived
Monitoring, Regular
—
OXAMYL
January 1, 2008 – December 31, 2010
Archived
Monitoring, Regular
—
Simazine
January 1, 2008 – December 31, 2010
Archived
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 2008 – December 31, 2010
Archived
Monitoring, Regular
—
Picloram
January 1, 2008 – December 31, 2010
Archived
Monitoring, Regular
—
Dinoseb
January 1, 2008 – December 31, 2010
Archived
Monitoring, Regular
—
Hexachlorocyclopentadiene
January 1, 2008 – December 31, 2010
Archived
Monitoring, Regular
—
Aldicarb sulfone
January 1, 2008 – December 31, 2010
Archived
Monitoring, Regular
—
Carbofuran
January 1, 2008 – December 31, 2010
Archived
Monitoring, Regular
—
Aldicarb
January 1, 2008 – December 31, 2010
Archived
Monitoring, Regular
—
Atrazine
January 1, 2008 – December 31, 2010
Archived
Monitoring, Regular
—
LASSO
January 1, 2008 – December 31, 2010
Archived
Monitoring, Regular
—
Heptachlor
January 1, 2008 – December 31, 2010
Archived
Monitoring, Regular
—
Heptachlor epoxide
January 1, 2008 – December 31, 2010
Archived
Monitoring, Regular
—
2,4-D
January 1, 2008 – December 31, 2010
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
May 1, 2007 – May 31, 2007
Resolved
Monitoring, Regular
—
Nitrate-Nitrite
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 1997 – June 30, 1997
Resolved
Monitoring, Regular
—
Pentachlorophenol
January 1, 1996 – December 31, 1998
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 1994 – December 3, 1996
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
October 1, 2016 – October 24, 2016	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
April 1, 2012 – April 11, 2012	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Aldicarb sulfoxide	—	Archived
January 1, 2008 – December 31, 2010	Monitoring, Regular	2,4,5-TP	—	Archived
January 1, 2008 – December 31, 2010	Monitoring, Regular	HEXACHLOROBENZENE	—	Archived
January 1, 2008 – December 31, 2010	Monitoring, Regular	Benzo(a)pyrene	—	Archived
January 1, 2008 – December 31, 2010	Monitoring, Regular	Pentachlorophenol	—	Archived
January 1, 2008 – December 31, 2010	Monitoring, Regular	Chlordane	—	Archived
January 1, 2008 – December 31, 2010	Monitoring, Regular	Endrin	—	Archived
January 1, 2008 – December 31, 2010	Monitoring, Regular	Methoxychlor	—	Archived
January 1, 2008 – December 31, 2010	Monitoring, Regular	Toxaphene	—	Archived
January 1, 2008 – December 31, 2010	Monitoring, Regular	Dalapon	—	Archived
January 1, 2008 – December 31, 2010	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Archived
January 1, 2008 – December 31, 2010	Monitoring, Regular	OXAMYL	—	Archived
January 1, 2008 – December 31, 2010	Monitoring, Regular	Simazine	—	Archived
January 1, 2008 – December 31, 2010	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Archived
January 1, 2008 – December 31, 2010	Monitoring, Regular	Picloram	—	Archived
January 1, 2008 – December 31, 2010	Monitoring, Regular	Dinoseb	—	Archived
January 1, 2008 – December 31, 2010	Monitoring, Regular	Hexachlorocyclopentadiene	—	Archived
January 1, 2008 – December 31, 2010	Monitoring, Regular	Aldicarb sulfone	—	Archived
January 1, 2008 – December 31, 2010	Monitoring, Regular	Carbofuran	—	Archived
January 1, 2008 – December 31, 2010	Monitoring, Regular	Aldicarb	—	Archived
January 1, 2008 – December 31, 2010	Monitoring, Regular	Atrazine	—	Archived
January 1, 2008 – December 31, 2010	Monitoring, Regular	LASSO	—	Archived
January 1, 2008 – December 31, 2010	Monitoring, Regular	Heptachlor	—	Archived
January 1, 2008 – December 31, 2010	Monitoring, Regular	Heptachlor epoxide	—	Archived
January 1, 2008 – December 31, 2010	Monitoring, Regular	2,4-D	—	Archived
May 1, 2007 – May 31, 2007	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Nitrate-Nitrite	—	Resolved
June 1, 1997 – June 30, 1997	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Pentachlorophenol	—	Resolved
January 1, 1994 – December 3, 1996	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved

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

Enforcement actions

May 15, 2009State Compliance achieved2 linked violations
July 11, 2007State Compliance achieved3 linked violations
June 15, 2007State Public Notification requested4 linked violations
February 10, 2006State Violation/Reminder Notice19 linked violations
December 2, 2002State Compliance achieved4 linked violations

Contact

JOHNSON, GREG G

406-640-1664

WEST YELLOWSTONE, MT 59758