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YNP - LAKE VILLAGE

Wyoming — Community Water System — PWSID: WY5680079

System Information

PWSIDWY5680079
System NameYNP - LAKE VILLAGE
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeFederal
EPA Region08
Serves SchoolNo
WholesalerNo
First ReportedFeb 2, 1981
Last ReportedNov 17, 2025

Location & Contact

StateWyoming
CityYELLOWSTONE
ZIP Code82190
AddressP.O. Box 168
OrganizationHOFFMAN, STEVEN
Phone307-344-9051

Population & Service

Population Served5,925
Service Connections683

Drinking Water Violations (36)

This water system has 36 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
Jan 1, 2024 Dec 31, 2024 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024 — Lead and Copper Rule MR No No — TT — Resolved Aug 19, 2025 Lead and Copper Rule
Jan 1, 2024 Dec 31, 2024 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Sep 29, 2023 — Lead and Copper Rule MR No No — TT — Unaddressed — Lead and Copper Rule
Jul 1, 2023 Sep 30, 2023 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Sep 30, 2023 Volatile Organic Chemicals
Jul 1, 2023 Sep 30, 2023 Diquat MR No Yes — 0.02 mg/L — Resolved Sep 30, 2023 Synthetic Organic Chemicals
Jul 1, 2023 Sep 30, 2023 Dinoseb MR No Yes — 0.007 mg/L — Resolved Sep 30, 2023 Synthetic Organic Chemicals
Jul 1, 2023 Sep 30, 2023 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Sep 30, 2023 Volatile Organic Chemicals
Jul 1, 2023 Sep 30, 2023 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Sep 30, 2023 Volatile Organic Chemicals
Jul 1, 2023 Sep 30, 2023 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Sep 30, 2023 Volatile Organic Chemicals
Jul 1, 2023 Sep 30, 2023 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Sep 30, 2023 Volatile Organic Chemicals
Jul 1, 2023 Sep 30, 2023 Xylenes, Total MR No Yes — 10 mg/L — Resolved Sep 30, 2023 Volatile Organic Chemicals
Jul 1, 2023 Sep 30, 2023 Picloram MR No Yes — 0.5 mg/L — Resolved Sep 30, 2023 Synthetic Organic Chemicals
Jul 1, 2023 Sep 30, 2023 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Sep 30, 2023 Volatile Organic Chemicals
Jul 1, 2023 Sep 30, 2023 Endothall MR No Yes — 0.1 mg/L — Resolved Sep 30, 2023 Synthetic Organic Chemicals
Jul 1, 2023 Sep 30, 2023 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Sep 30, 2023 Volatile Organic Chemicals
Jul 1, 2023 Sep 30, 2023 Pentachlorophenol MR No Yes — 0.001 mg/L — Resolved Sep 30, 2023 Synthetic Organic Chemicals
Jul 1, 2023 Sep 30, 2023 Tetrachloroethylene MR No Yes — 0.005 mg/L — Resolved Sep 30, 2023 Volatile Organic Chemicals
Jul 1, 2023 Sep 30, 2023 2,4-D MR No Yes — 0.07 mg/L — Resolved Sep 30, 2023 Synthetic Organic Chemicals
Jul 1, 2023 Sep 30, 2023 Dalapon MR No Yes — 0.2 mg/L — Resolved Sep 30, 2023 Synthetic Organic Chemicals
Jul 1, 2023 Sep 30, 2023 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Sep 30, 2023 Volatile Organic Chemicals
Jul 1, 2023 Sep 30, 2023 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Sep 30, 2023 Volatile Organic Chemicals
Jul 1, 2023 Sep 30, 2023 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Sep 30, 2023 Volatile Organic Chemicals
Jul 1, 2023 Sep 30, 2023 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Sep 30, 2023 Volatile Organic Chemicals
Jul 1, 2023 Sep 30, 2023 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Sep 30, 2023 Volatile Organic Chemicals
Jul 1, 2023 Sep 30, 2023 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Sep 30, 2023 Volatile Organic Chemicals
Jul 1, 2023 Sep 30, 2023 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Resolved Sep 30, 2023 Volatile Organic Chemicals
Jul 1, 2023 Sep 30, 2023 2,4,5-TP MR No Yes — 0.05 mg/L — Resolved Sep 30, 2023 Synthetic Organic Chemicals
Jul 1, 2023 Sep 30, 2023 CHLOROBENZENE MR No Yes — 0.1 mg/L — Resolved Sep 30, 2023 Volatile Organic Chemicals
Jul 1, 2023 Sep 30, 2023 Benzene MR No Yes — 0.005 mg/L — Resolved Sep 30, 2023 Volatile Organic Chemicals
Jul 1, 2023 Sep 30, 2023 Toluene MR No Yes — 1 mg/L — Resolved Sep 30, 2023 Volatile Organic Chemicals
Jul 1, 2023 Sep 30, 2023 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Sep 30, 2023 Volatile Organic Chemicals
Jul 1, 2023 Sep 30, 2023 Styrene MR No Yes — 0.1 mg/L — Resolved Sep 30, 2023 Volatile Organic Chemicals
Oct 1, 2017 Oct 31, 2017 Revised Total Coliform Rule MON No Yes — — — Resolved Oct 31, 2017 Revised Total Coliform Rule
Oct 1, 2017 Oct 31, 2017 Revised Total Coliform Rule MON No Yes — — — Resolved Oct 31, 2017 Revised Total Coliform Rule
Aug 1, 2013 Aug 31, 2013 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Aug 31, 2013 Total Coliform Rule

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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