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WEST YELLOWSTONE TOWN OF

Montana — Community Water System — PWSID: MT0003136

System Information

PWSIDMT0003136
System NameWEST YELLOWSTONE TOWN OF
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region08
Serves SchoolNo
WholesalerNo
First ReportedJul 1, 1987
Last ReportedJan 5, 2026

Location & Contact

StateMontana
CityWEST YELLOWSTONE
ZIP Code59758
AddressPO BOX 1570
OrganizationBROWN, JON M
Phone406-646-7795

Population & Service

Population Served9,899
Service Connections628

Drinking Water Violations (203)

This water system has 203 violations recorded in the EPA SDWIS database.

Begin Date End Date Contaminant Category Health-Based Major Measured Federal MCL State MCL Status Return to Compliance Rule
Jul 1, 2021 Sep 30, 2021 Fluoride MR No Yes — 4.0 mg/L — Archived Sep 30, 2021 Inorganic Chemicals
Apr 1, 2021 Jun 30, 2021 Arsenic MR No Yes — 0.010 mg/L — Resolved Jun 30, 2021 Arsenic Rule
Apr 1, 2021 Jun 30, 2021 Arsenic MR No Yes — 0.010 mg/L — Resolved Jun 30, 2021 Arsenic Rule
Apr 1, 2021 Jun 30, 2021 Arsenic MR No Yes — 0.010 mg/L — Resolved Jun 30, 2021 Arsenic Rule
Aug 28, 2019 — E. COLI MR No Yes — — — Resolved Sep 23, 2019 Ground Water Rule
Aug 28, 2019 — E. COLI MR No Yes — — — Resolved Sep 23, 2019 Ground Water Rule
Aug 28, 2019 — E. COLI MR No Yes — — — Resolved Sep 23, 2019 Ground Water Rule
Apr 1, 2018 — Lead and Copper Rule MR No No — TT — Resolved Jun 25, 2018 Lead and Copper Rule
Apr 1, 2018 — Lead and Copper Rule MR No No — TT — Resolved Jun 25, 2018 Lead and Copper Rule
Jan 1, 2018 Mar 31, 2018 Arsenic MR No Yes — 0.010 mg/L — Resolved Mar 31, 2018 Arsenic Rule
Jan 1, 2018 Mar 31, 2018 Arsenic MR No Yes — 0.010 mg/L — Resolved Mar 31, 2018 Arsenic Rule
Jan 1, 2018 Mar 31, 2018 Fluoride MR No Yes — 4.0 mg/L — Resolved Mar 31, 2018 Inorganic Chemicals
Jan 1, 2018 Mar 31, 2018 Fluoride MR No Yes — 4.0 mg/L — Resolved Mar 5, 2018 Inorganic Chemicals
Jan 1, 2018 Mar 31, 2018 Arsenic MR No Yes — 0.010 mg/L — Resolved Mar 31, 2018 Arsenic Rule
Jan 1, 2018 Mar 31, 2018 Fluoride MR No Yes — 4.0 mg/L — Resolved Mar 31, 2018 Inorganic Chemicals
Jan 1, 2018 Mar 31, 2018 Fluoride MR No Yes — 4.0 mg/L — Resolved Mar 31, 2018 Inorganic Chemicals
Jan 1, 2018 Mar 31, 2018 Fluoride MR No Yes — 4.0 mg/L — Resolved Mar 5, 2018 Inorganic Chemicals
Jan 1, 2018 Mar 31, 2018 Fluoride MR No Yes — 4.0 mg/L — Resolved Mar 5, 2018 Inorganic Chemicals
Dec 7, 2017 — E. COLI MR No Yes — — — Resolved Jan 4, 2018 Ground Water Rule
Dec 7, 2017 — E. COLI MR No Yes — — — Resolved Jan 4, 2018 Ground Water Rule
Dec 7, 2017 — E. COLI MR No Yes — — — Resolved Jan 4, 2018 Ground Water Rule
Jul 1, 2017 — Consumer Confidence Rule Other No No — — — Resolved Aug 3, 2017 Consumer Confidence Rule
Jul 1, 2017 — Consumer Confidence Rule Other No No — — — Resolved Aug 3, 2017 Consumer Confidence Rule
Jul 1, 2017 Sep 30, 2017 Endrin MR No Yes — 0.002 mg/L — Resolved Sep 30, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Benzo(a)pyrene MR No Yes — 0.0002 mg/L — Resolved Sep 30, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Endrin MR No Yes — 0.002 mg/L — Resolved Sep 30, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Endrin MR No Yes — 0.002 mg/L — Resolved Sep 30, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 BHC-GAMMA MR No Yes — 0.0002 mg/L — Resolved Sep 30, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 BHC-GAMMA MR No Yes — 0.0002 mg/L — Resolved Sep 30, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 BHC-GAMMA MR No Yes — 0.0002 mg/L — Resolved Sep 30, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Methoxychlor MR No Yes — 0.04 mg/L — Resolved Sep 30, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Methoxychlor MR No Yes — 0.04 mg/L — Resolved Sep 30, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Heptachlor MR No Yes — 0.0004 mg/L — Resolved Sep 30, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Di(2-ethylhexyl) adipate MR No Yes — 0.4 mg/L — Resolved Sep 30, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Di(2-ethylhexyl) adipate MR No Yes — 0.4 mg/L — Resolved Sep 30, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Di(2-ethylhexyl) phthalate MR No Yes — 0.006 mg/L — Resolved Sep 30, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Simazine MR No Yes — 0.004 mg/L — Resolved Sep 30, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Simazine MR No Yes — 0.004 mg/L — Resolved Sep 30, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Di(2-ethylhexyl) phthalate MR No Yes — 0.006 mg/L — Resolved Sep 30, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Atrazine MR No Yes — 0.003 mg/L — Resolved Sep 30, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Atrazine MR No Yes — 0.003 mg/L — Resolved Sep 30, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Carbofuran MR No Yes — 0.04 mg/L — Resolved Sep 30, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Benzo(a)pyrene MR No Yes — 0.0002 mg/L — Resolved Sep 30, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Heptachlor MR No Yes — 0.0004 mg/L — Resolved Sep 30, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Heptachlor MR No Yes — 0.0004 mg/L — Resolved Sep 30, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Sep 30, 2017 Radionuclides and Revised Rad Rule
Jul 1, 2017 Sep 30, 2017 2,4-D MR No Yes — 0.07 mg/L — Resolved Sep 30, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 2,4,5-TP MR No Yes — 0.05 mg/L — Resolved Sep 30, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 2,4,5-TP MR No Yes — 0.05 mg/L — Resolved Sep 30, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 2,4,5-TP MR No Yes — 0.05 mg/L — Resolved Sep 30, 2017 Synthetic Organic Chemicals

About This Water System

Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.

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