Grantsville Warm Springs
Grantsville Warm Springs flows at 77°F from Utah state trust lands in Tooele County, delivering extraordinarily mineralized water reaching 26,700 mg/L total dissolved solids. Recent USGS measurements documented 27°C with pH 7.5, while detailed chemistry shows 9,000 mg/L sodium and 16,000 mg/L chloride balanced by 630 mg/L sulfate, with 750 mg/L calcium and 200 mg/L magnesium creating one of Utah's most saline thermal features. The spring emerges just 47 meters from road access at 4,240 feet elevation.
The springs occupy terrain near Grantsville in Tooele Valley, where evaporative conditions and Great Salt Lake proximity create hypersaline groundwater conditions. At 4,240 feet elevation, the site sits on state trust lands managed for revenue generation rather than conservation, with the spring running 23 degrees above ambient air temperature in terrain receiving 15 inches of annual precipitation and 27 inches of snow. Surrounding landscape consists of agricultural lands, scattered development, and views toward the Stansbury Mountains, with salt-tolerant vegetation marking the spring's highly mineralized discharge.
Grantsville was settled by Mormon pioneers in 1851, with the warm springs known to early settlers and likely utilized by Indigenous Goshute peoples before Euro-American arrival. The springs occupy state trust lands granted to Utah at statehood to generate revenue for public schools and institutions, with management focused on extractive uses and revenue rather than preservation. The area remains lightly developed despite proximity to growing Grantsville.
The roadside location allows year-round access via local roads, though water quality is unsuitable for bathing or consumption due to extreme salinity. The nearest camping lies 18 km away at Boy Scout Campground in South Willow Canyon at 6,320 feet elevation, offering access to Deseret Peak Wilderness trails. Spring and fall provide moderate temperatures, while summer heat can be intense at this low elevation.
Is Grantsville Warm Springs worth visiting?
Best for
- Easy day trips
- Overnight camping trips
- Mineral-rich therapeutic bathing
The water at Grantsville Warm Springs is slightly alkaline (pH 7.5) with 26700 mg/L total dissolved solids. It is notably rich in calcium (may support bone density and joint health), magnesium (known for muscle relaxation and stress relief), and sodium (supports circulation and skin hydration).
Overview Boy Scout Campground is located southwest of Grantsville, Utah, in South Willow Canyon at an elevation of 6,320 feet. Visitors enjoy exploring local trails.Recreation The multi-use Stansbury Front Trail and Medina Flat Trail begin across the road from the entrance, offering access to the rugged Deseret Peak Wilderness. Willow Creek offers rainbow and brown trout fishing.Facilities This primitive campground contains one group site that can accommodate up to 35 people, 5 single family...