Drinking Water Compliance OS

GREAT FALLS, MT · Cascade County

SOUTH WIND WATER AND SEWER 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)
MT0000025
System type
Community Water System
Population served
200
Service connections
95
Ownership
local government
Water source
groundwater (wells)

Violation history

  • Follow-up Or Routine LCR Tap M/R

    Lead and Copper Rule

    October 1, 2022 – August 22, 2024

    Resolved
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2022 – July 13, 2022

    Resolved
  • Follow-up Or Routine LCR Tap M/R

    Lead and Copper Rule

    October 1, 2021 – August 22, 2024

    Resolved
  • Consumer Confidence Report Inadequate Reporting

    Consumer Confidence Rule

    October 1, 2019 – February 18, 2020

    Resolved
  • Follow-up Or Routine LCR Tap M/R

    Lead and Copper Rule

    October 1, 2018 – September 25, 2019

    Resolved
  • Lead Consumer Notice

    Lead and Copper Rule

    April 1, 2018 – December 4, 2019

    Resolved
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2017 – August 1, 2017

    Resolved
  • Monitoring, Regular

    Gross Alpha, Excl. Radon and U

    April 1, 2017 – June 14, 2017

    Resolved
  • Monitoring, Regular

    Combined Radium (-226 and -228)

    April 1, 2017 – June 14, 2017

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Arsenic

    July 1, 2016 – January 31, 2016

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Arsenic

    April 1, 2016 – June 30, 2016

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Arsenic

    January 1, 2016 – March 31, 2016

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Arsenic

    October 1, 2015 – December 31, 2015

    Resolved
  • Monitoring, Regular

    Arsenic

    April 1, 2015 – June 30, 2015

    Resolved
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    January 1, 2015 – January 31, 2015

    Resolved
  • Monitoring, Regular

    1,1-Dichloroethylene

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    Methoxychlor

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    Toxaphene

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    Dalapon

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    Di(2-ethylhexyl) adipate

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    OXAMYL

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    Simazine

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    Di(2-ethylhexyl) phthalate

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    Picloram

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    Dinoseb

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    Hexachlorocyclopentadiene

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    Carbofuran

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    Atrazine

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    LASSO

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    Heptachlor

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    Heptachlor epoxide

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    2,4-D

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    2,4,5-TP

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    HEXACHLOROBENZENE

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    Benzo(a)pyrene

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    Pentachlorophenol

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    Chlordane

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    1,2,4-Trichlorobenzene

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    cis-1,2-Dichloroethylene

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    Xylenes, Total

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    DICHLOROMETHANE

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    o-Dichlorobenzene

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    p-Dichlorobenzene

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    Vinyl chloride

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    trans-1,2-Dichloroethylene

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    1,2-Dichloroethane

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    1,1,1-Trichloroethane

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    Carbon tetrachloride

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    1,2-Dichloropropane

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    Trichloroethylene

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    1,1,2-Trichloroethane

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    Tetrachloroethylene

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    CHLOROBENZENE

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    Benzene

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    Toluene

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    Ethylbenzene

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    Styrene

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    Endrin

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    BHC-GAMMA

    January 1, 2014 – December 31, 2016

    Resolved
  • Monitoring, Regular

    Arsenic

    April 1, 2013 – June 19, 2013

    Resolved
  • Consumer Confidence Report Inadequate Reporting

    Consumer Confidence Rule

    October 1, 2012 – April 30, 2015

    Resolved
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2012 – April 30, 2015

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Arsenic

    April 1, 2012 – June 30, 2012

    Resolved
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    April 1, 2012 – April 30, 2012

    Resolved
  • Lead Consumer Notice

    Lead and Copper Rule

    January 1, 2012 – March 9, 2012

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Arsenic

    January 1, 2012 – March 31, 2012

    Resolved
  • Monitoring, Regular

    Arsenic

    January 1, 2012 – March 31, 2012

    Resolved
  • Maximum Contaminant Level Violation, Single Sample

    Health-based

    Arsenic

    October 1, 2011 – December 31, 2011

    Archived
  • Monitoring, Source Water (GWR)

    E. COLI

    September 1, 2011 – December 6, 2015

    Resolved
  • Monitoring, Source Water (GWR)

    E. COLI

    September 1, 2011 – December 6, 2015

    Resolved
  • Failure To Address Deficiency

    Health-based

    Groundwater Rule

    July 8, 2011 – August 23, 2012

    Resolved
  • Monitoring, Regular

    Chromium

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    Barium

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    Cadmium

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    Fluoride

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    Mercury

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    Nickel

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    Antimony, Total

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    Beryllium, Total

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    Thallium, Total

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    Selenium

    January 1, 2011 – December 31, 2013

    Resolved
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2008 – August 21, 2008

    Resolved
  • Initial, Follow-up, or Routine Source Water M/R

    Lead and Copper Rule

    March 7, 2006 – August 20, 2008

    Resolved
  • OCCT/SOWT Study/Recommendation

    Health-based

    Lead and Copper Rule

    March 7, 2006 – August 20, 2008

    Resolved
  • Public Education

    Health-based

    Lead and Copper Rule

    November 7, 2005 – December 8, 2007

    Resolved
  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    September 1, 2003 – September 20, 2003

    Resolved
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2003 – August 2, 2004

    Resolved
  • Follow-up Or Routine LCR Tap M/R

    Lead and Copper Rule

    October 1, 2001 – January 30, 2004

    Resolved
  • Follow-up Or Routine LCR Tap M/R

    Lead and Copper Rule

    October 1, 1999 – January 30, 2004

    Resolved
  • Monitoring, Repeat Minor (TCR)

    Coliform (TCR)

    August 1, 1997 – August 31, 1997

    Resolved
  • Monitoring, Regular

    2,4-D

    January 1, 1996 – December 31, 1998

    Resolved
  • Monitoring, Regular

    Heptachlor

    January 1, 1996 – December 31, 1998

    Resolved
  • Monitoring, Regular

    Picloram

    January 1, 1996 – December 31, 1998

    Resolved
  • Monitoring, Regular

    Benzo(a)pyrene

    January 1, 1996 – December 31, 1998

    Resolved
  • Monitoring, Regular

    Thallium, Total

    January 1, 1996 – December 31, 1998

    Resolved
  • Monitoring, Regular

    Arsenic

    January 1, 1996 – December 31, 1998

    Resolved
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    November 1, 1995 – November 30, 1995

    Resolved
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    July 1, 1995 – July 31, 1995

    Resolved
  • Monitoring, Regular

    Nitrate

    January 1, 1993 – December 31, 1993

    Resolved
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    May 1, 1992 – May 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

Contact

SOUTH WIND WATER AND SEWER DISTRICT

406-788-0137

GREAT FALLS, MT 59405