Public Water Partners

HELENA, MT · Lewis and Clark County

ROSEMARYS ADDITION Water System

Consumer Confidence Report status

ROSEMARYS ADDITION 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 ROSEMARYS ADDITION.

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)
MT0002743
System type
Community Water System
Population served
30
Service connections
14
Ownership
privately owned
Water source
groundwater (wells)

ROSEMARYS ADDITION is one of 1,084 community water systems in Montana in the 500 or fewer people size category, serving 30 people from groundwater.

As of August 1, 2026, its federal record holds 23 entries between 1997 and 2014, all of which EPA lists as closed. Nothing has been added since 2014.

Of the 23, 22 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, synthetic organic chemicals, and inorganic chemicals.

Violation history

  • Follow-up Or Routine LCR Tap M/R

    —

    Lead and Copper Rule

    October 1, 2014 – October 23, 2014

    Resolved

  • Monitoring, Regular

    —

    Nitrate-Nitrite

    January 1, 2012 – December 31, 2012

    Resolved

  • Consumer Confidence Report Inadequate Reporting

    —

    Consumer Confidence Rule

    February 5, 2007 – March 1, 2007

    Resolved

  • Monitoring, Regular

    —

    Thallium, Total

    January 1, 2002 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Dalapon

    January 1, 2002 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Picloram

    January 1, 2002 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Dinoseb

    January 1, 2002 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    2,4,5-TP

    January 1, 2002 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Pentachlorophenol

    January 1, 2002 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    1,2,4-Trichlorobenzene

    January 1, 2002 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    cis-1,2-Dichloroethylene

    January 1, 2002 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    o-Dichlorobenzene

    January 1, 2002 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    1,1-Dichloroethylene

    January 1, 2002 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    1,2-Dichloroethane

    January 1, 2002 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    1,2-Dichloropropane

    January 1, 2002 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    1,1,2-Trichloroethane

    January 1, 2002 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    CHLOROBENZENE

    January 1, 2002 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Benzene

    January 1, 2002 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Ethylbenzene

    January 1, 2002 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    DICHLOROMETHANE

    January 1, 2002 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Nickel

    January 1, 2002 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Antimony, Total

    January 1, 2002 – December 31, 2004

    Resolved

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    June 1, 1997 – June 30, 1997

    Resolved

Resolved addressed and confirmed by the state

Enforcement actions

Common questions

Is ROSEMARYS ADDITION required to publish a Consumer Confidence Report?

Yes. ROSEMARYS ADDITION 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 ROSEMARYS ADDITION’s next Consumer Confidence Report due?

ROSEMARYS ADDITION’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

Does ROSEMARYS ADDITION have any open drinking water violations on record?

As of August 1, 2026, EPA's federal records show no open violations for ROSEMARYS ADDITION.

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

CADWELL, LORI K

406-458-9818

HELENA, MT 59602