Drinking Water Compliance OS

POLSON, MT · Lake County

FERNDALE MOBILE CT FERNDALE Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of December 3, 2003. It is no longer an operating public water system under this PWSID, and no compliance deadlines — including the 2027 Consumer Confidence Report rule — apply to it.

If you are a resident looking for your current water provider, see water systems in Lake County, MT.

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)
MT0000624
System type
Community Water System
Population served
30
Service connections
15
Ownership
privately owned
Water source
groundwater (wells)

Violation history

  • Follow-up Or Routine LCR Tap M/R

    —

    Lead and Copper Rule

    October 1, 2003 – December 3, 2003

    Archived

  • Monitoring, Regular

    —

    Cadmium

    January 1, 2002 – December 3, 2003

    Resolved

  • Monitoring, Regular

    —

    Fluoride

    January 1, 2002 – December 3, 2003

    Resolved

  • Monitoring, Regular

    —

    Mercury

    January 1, 2002 – December 3, 2003

    Resolved

  • Monitoring, Regular

    —

    Antimony, Total

    January 1, 2002 – December 3, 2003

    Resolved

  • Monitoring, Regular

    —

    Beryllium, Total

    January 1, 2002 – December 3, 2003

    Resolved

  • Monitoring, Regular

    —

    HEXACHLOROBENZENE

    January 1, 2002 – December 3, 2003

    Resolved

  • Monitoring, Regular

    —

    Pentachlorophenol

    January 1, 2002 – December 3, 2003

    Resolved

  • Monitoring, Regular

    —

    Endrin

    January 1, 2002 – December 3, 2003

    Resolved

  • Monitoring, Regular

    —

    BHC-GAMMA

    January 1, 2002 – December 3, 2003

    Resolved

  • Monitoring, Regular

    —

    Methoxychlor

    January 1, 2002 – December 3, 2003

    Resolved

  • Monitoring, Regular

    —

    Dalapon

    January 1, 2002 – December 3, 2003

    Resolved

  • Monitoring, Regular

    —

    Di(2-ethylhexyl) adipate

    January 1, 2002 – December 3, 2003

    Resolved

  • Monitoring, Regular

    —

    OXAMYL

    January 1, 2002 – December 3, 2003

    Resolved

  • Monitoring, Regular

    —

    Simazine

    January 1, 2002 – December 3, 2003

    Resolved

  • Monitoring, Regular

    —

    Dinoseb

    January 1, 2002 – December 3, 2003

    Resolved

  • Monitoring, Regular

    —

    Aldicarb sulfoxide

    January 1, 2002 – December 3, 2003

    Resolved

  • Monitoring, Regular

    —

    Aldicarb

    January 1, 2002 – December 3, 2003

    Resolved

  • Monitoring, Regular

    —

    LASSO

    January 1, 2002 – December 3, 2003

    Resolved

  • Monitoring, Regular

    —

    Heptachlor

    January 1, 2002 – December 3, 2003

    Resolved

  • Monitoring, Regular

    —

    2,4-D

    January 1, 2002 – December 3, 2003

    Resolved

  • Monitoring, Regular

    —

    2,4,5-TP

    January 1, 2002 – December 3, 2003

    Resolved

  • Monitoring, Regular

    —

    Arsenic

    January 1, 1999 – December 31, 2001

    Resolved

  • Monitoring, Regular

    —

    Barium

    January 1, 1996 – December 31, 1998

    Resolved

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    January 1, 1996 – January 31, 1996

    Archived

  • Monitoring, Regular

    —

    Fluoride

    January 1, 1996 – December 31, 1998

    Resolved

  • Monitoring, Regular

    —

    Selenium

    January 1, 1996 – December 31, 1998

    Resolved

  • Monitoring, Regular

    —

    Mercury

    January 1, 1996 – December 31, 1998

    Resolved

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    July 1, 1995 – July 31, 1995

    Archived

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

Enforcement actions

Last known contact on file (system is inactive)

Not on record

406-883-4526

POLSON, MT 598600741