Jackson Water Hardness & Quality Report (2026)

The Town of Jackson, Wyoming operates a municipal water utility serving the Jackson area in Teton County. The system draws from three groundwater wells (designated SP1, SP2, and SP3) that tap into the aquifer system beneath Jackson Hole. The utility maintains these wells and distributes treated water throughout the service area. Contact information for billing and water quality inquiries is available through the Town Hall, with Shellie Morillon serving as the primary contact for water and sewer matters. Jackson's water supply originates from groundwater sources within the Jackson Hole valley, which is underlain by Quaternary alluvial and glacial deposits sitting atop older Paleozoic and Mesozoic sedimentary rock formations. The geology of the region—dominated by carbonate-rich strata—drives the chemical composition of the groundwater. The aquifer system that feeds Jackson's wells passes through limestone and dolomite formations, which dissolve readily and contribute dissolved minerals to the water supply, resulting in a very hard water character.

Jackson's water supply is drawn from three groundwater sources (Wells #1, #5, and #6/7/8) in the Jackson Hole valley, which sits atop Quaternary alluvial and glacial deposits overlying Paleozoic and Mesozoic sedimentary formations. The high hardness reflects dissolution of carbonate minerals (calcite, dolomite) from these formations, typical of the Snake River Plain geology underlying northwestern Wyoming.

At the very hard level, Jackson's water supply will cause significant scaling in water heaters, kettles, and dishwashers, and will reduce the efficiency and lifespan of these appliances. Soap and detergent performance is noticeably diminished, requiring higher doses for effective cleaning. Residents typically benefit from installing a whole-house water softener to protect plumbing infrastructure, extend appliance life, and improve the effectiveness of cleaning products. Regular maintenance of softening equipment is recommended to prevent mineral buildup in pipes and fixtures. The Town of Jackson publishes annual hardness summary reports for each sampling point.