Is MOUNTAIN SHADOWS ESTATES STEVENSVILLE required to publish a Consumer Confidence Report?

Yes. MOUNTAIN SHADOWS ESTATES STEVENSVILLE is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is MOUNTAIN SHADOWS ESTATES STEVENSVILLE’s next Consumer Confidence Report due?

MOUNTAIN SHADOWS ESTATES STEVENSVILLE’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

MISSOULA, MT · Ravalli County

MOUNTAIN SHADOWS ESTATES STEVENSVILLE Water System

Consumer Confidence Report status

MOUNTAIN SHADOWS ESTATES STEVENSVILLE must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show no open violations for MOUNTAIN SHADOWS ESTATES STEVENSVILLE.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 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): MT0002132
System type: Community Water System
Population served: 55
Service connections: 22
Ownership: privately owned
Water source: groundwater (wells)

MOUNTAIN SHADOWS ESTATES STEVENSVILLE is one of 1,084 community water systems in Montana in the 500 or fewer people size category, serving 55 people from groundwater.

As of August 1, 2026, its federal record holds 15 entries between 2002 and 2011, all of which EPA lists as closed. Nothing has been added since 2011.

Of the 15, 14 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves volatile organic chemicals, the Total Coliform Rules, and synthetic organic chemicals.

Violation history

Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 2011 – October 31, 2011
Resolved
Monitoring, Regular
—
Styrene
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
Benzene
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
2,4,5-TP
January 1, 2002 – December 31, 2004
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
October 1, 2011 – October 31, 2011	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Styrene	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Benzene	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	2,4,5-TP	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

January 7, 2026State Violation/Reminder Notice1 linked violation
January 7, 2026State Public Notification requested2 linked violations
December 2, 2022State Public Notification received1 linked violation
November 4, 2022State Public Notification requested1 linked violation
September 20, 2022State Compliance achieved1 linked violation
July 24, 2017State Compliance achieved2 linked violations
July 20, 2017State Violation/Reminder Notice2 linked violations
March 15, 2014State Public Notification received22 linked violations
February 19, 2014State Compliance achieved21 linked violations
January 24, 2014State Public Notification requested22 linked violations
January 24, 2014State Violation/Reminder Notice22 linked violations
January 18, 2013State Violation/Reminder Notice2 linked violations
September 17, 2012State Public Notification requested1 linked violation
September 17, 2012State Violation/Reminder Notice2 linked violations
June 21, 2012State Compliance achieved1 linked violation
December 16, 2011State Compliance achieved1 linked violation
December 14, 2011State Public Notification requested2 linked violations
November 3, 2011State Compliance achieved2 linked violations
October 25, 2011State Public Notification received1 linked violation
October 17, 2011State Public Notification requested2 linked violations
October 17, 2011State Violation/Reminder Notice1 linked violation
October 17, 2011State Violation/Reminder Notice1 linked violation
December 3, 2010State Compliance achieved2 linked violations
October 8, 2010State Compliance achieved8 linked violations
October 8, 2010State Compliance achieved2 linked violations
October 5, 2009State Violation/Reminder Notice2 linked violations
October 5, 2009State Violation/Reminder Notice2 linked violations
September 10, 2009State Violation/Reminder Notice6 linked violations
September 10, 2009State Public Notification requested5 linked violations
June 14, 2007State Public Notification received1 linked violation
February 10, 2006State Public Notification requested1 linked violation
April 15, 2005State Public Notification requested21 linked violations
April 14, 2005State Public Notification requested13 linked violations
December 3, 2002State Compliance achieved2 linked violations
June 20, 2002State Public Notification requested1 linked violation
June 20, 2002State Violation/Reminder Notice1 linked violation
April 19, 2002State Violation/Reminder Notice1 linked violation
April 19, 2002State Public Notification requested1 linked violation
October 10, 1983State no additional Formal Action needed1 linked violation

Common questions

Is MOUNTAIN SHADOWS ESTATES STEVENSVILLE required to publish a Consumer Confidence Report?: Yes. MOUNTAIN SHADOWS ESTATES STEVENSVILLE is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is MOUNTAIN SHADOWS ESTATES STEVENSVILLE’s next Consumer Confidence Report due?: MOUNTAIN SHADOWS ESTATES STEVENSVILLE’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does MOUNTAIN SHADOWS ESTATES STEVENSVILLE have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for MOUNTAIN SHADOWS ESTATES STEVENSVILLE.
What is a Consumer Confidence Report?: A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

ADVANCED WATER SAMPLING

406-214-8285

MISSOULA, MT 59806