2 listings
Most Mineral-Rich Hot Springs in Alaska
Springs whose source water tested at 1,500 mg/L or more of dissolved minerals, based on USGS and state lab samples. For comparison, tap water is usually under 500 mg/L.
We list 2 in Alaska.
Goddard Hot Springs
City and Borough of Sitka property on Hot Springs Bay, on the outer coast of Baranof Island about 16 miles south of Sitka. The city maintains two cedar bathhouses with tubs, plus open shelters, boardwalks and outhouses. The spring emerges at about 153°F, and tubs are cooled with a cold-water supply.

Serpentine Hot Springs
Hot springs in Bering Land Bridge National Preserve, piped into an enclosed bathhouse next to a year-round bunkhouse and an unmaintained gravel airstrip. There are no roads, so most visitors fly in by air taxi, and in winter snowmachine trails are staked from Nome and Shishmaref. The site, known in Inupiaq as Iyat, has long cultural and spiritual importance.