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Wyoming Water Quality
95
Utilities in database
0.5M
Residents served
45%
On private wells
2
Key contaminants tracked
Drinking Water in Wyoming
Wyoming has 95 community water systems serving approximately 0.5 million residents. Primary water sources include groundwater. The most commonly reported contaminants include disinfection byproducts, lead. 45% of Wyoming residents rely on private wells. DEQ holds primary enforcement authority under the Safe Drinking Water Act.
Utilities in Wyoming
26–50 of 95Town of Bar Nunn
WY5600067 · 4,000 served
Town of Wheatland
WY5600187 · 3,659 served
City of Newcastle
WY5600256 · 3,595 served
Kemmerer-diamondville Jpb
WY5600028 · 3,348 served
Town of Greybull
WY5600022 · 3,260 served
White Mountain W&s District
WY5601391 · 3,000 served
Town of Thermopolis
WY5600056 · 2,775 served
Town of Evansville
WY5600018 · 2,728 served
Ynp-mammoth Hot Springs
WY5680092 · 2,600 served
Wright Water & Sewer District
WY5600136 · 2,500 served
Town of Glenrock
WY5600199 · 2,466 served
Sleepy Hollow Subdivision
WY5600764 · 2,400 served
Town of Lovell
WY5600031 · 2,360 served
Town of Lyman
WY5600033 · 2,203 served
Town of Star Valley Ranch
WY5600287 · 2,030 served
Little America Hotels & Resorts, Inc- Wy
WY5600097 · 2,004 served
Afton, Board of Pub Utilities
WY5600002 · 2,000 served
Leisure Valley Inc/ Star Valley Rv Park
WY5601471 · 1,910 served
Pinedale Municipal Ws
WY5600041 · 1,900 served
Gtnp-jackson Lake Lodge
WY5680103 · 1,830 served
Town of Dubois
WY5600177 · 1,822 served
Bridger Valley Joint Powers Board
WY5600757 · 1,728 served
Town of Saratoga
WY5600061 · 1,720 served
Vista West Water Company
WY5600069 · 1,600 served
Town of Lusk
WY5600032 · 1,576 served
Key Contaminant Concerns in Wyoming
Lead
Lead is a naturally occurring heavy metal that was widely used in plumbing infrastructure until it was banned for new installations in 1986. An estimated 9.2 million lead service lines still connect homes to public water mains across the United States, along with millions of homes with lead solder in their internal plumbing.
DBPs
When utilities add chlorine to water to kill pathogens, it reacts with dissolved organic matter — leaves, algae, soil — to produce disinfection byproducts (DBPs). Over 600 DBPs have been identified. The EPA regulates two groups: total trihalomethanes (TTHMs, including chloroform) and haloacetic acids (HAA5). DBP levels tend to be highest in surface water systems and in warm months when organic matter is elevated.
Wyoming Water FAQs
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Data source: Utility data from EPA SDWIS. 95 active community water systems ingested. CCR contaminant data ingestion in progress.
Last updated: 2026-04-24