Public Water Partners

SWEET GRASS, MT · Toole County

HILLSIDE COLONY INC Water System

Consumer Confidence Report status

HILLSIDE COLONY INC 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 HILLSIDE COLONY INC.

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)
MT0001782
System type
Community Water System
Population served
100
Service connections
12
Ownership
privately owned
Water source
groundwater (wells)

HILLSIDE COLONY INC is one of 1,084 community water systems in Montana in the 500 or fewer people size category, serving 100 people from groundwater.

As of August 1, 2026, its federal record holds 10 entries between 1992 and 2015, all of which EPA lists as closed. Nothing has been added since 2015.

Of the 10, 9 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 the Total Coliform Rules, inorganic chemicals, and the Radionuclides and Revised Rad Rule.

Violation history

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    June 1, 2015 – June 30, 2015

    Resolved

  • Monitoring, Regular

    —

    Nitrate-Nitrite

    July 1, 2012 – September 30, 2012

    Resolved

  • Monitoring, Regular

    —

    Nitrate-Nitrite

    October 1, 2011 – December 31, 2011

    Resolved

  • Monitoring, Regular

    —

    Gross Alpha, Excl. Radon and U

    January 1, 2008 – December 31, 2016

    Archived

  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    September 1, 2005 – September 30, 2005

    Resolved

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    August 1, 2003 – August 31, 2003

    Resolved

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    August 1, 1999 – August 31, 1999

    Resolved

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    August 1, 1997 – August 31, 1997

    Resolved

  • Monitoring, Repeat Minor (TCR)

    —

    Coliform (TCR)

    August 1, 1992 – August 31, 1992

    Resolved

  • Monitoring, Repeat Major (TCR)

    —

    Coliform (TCR)

    July 1, 1992 – July 31, 1992

    Resolved

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

Enforcement actions

Common questions

Is HILLSIDE COLONY INC required to publish a Consumer Confidence Report?

Yes. HILLSIDE COLONY INC 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 HILLSIDE COLONY INC’s next Consumer Confidence Report due?

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

Does HILLSIDE COLONY INC have any open drinking water violations on record?

As of August 1, 2026, EPA's federal records show no open violations for HILLSIDE COLONY INC.

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

WURZ, MIKE M

406-937-2966

SWEET GRASS, MT 59484