Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
BicarbonatesCalcium
Calistoga Hot Springs And Spa is located in Fremont, Alameda County, California. The sulfurous, thermal water reaches 40°C at pH 7.3, with indoor and outdoor baths, a sauna and massage available on site.
Insider tip — Hot springs and spa in the San Francisco Bay Area using Calistoga-branded volcanic mineral spring water. Located in Fremont, East Bay. Note: despite the Calistoga name, this facility is in the SF Bay Area, not in Napa Valley.