Last updated: February 3, 2021
Place
Noble Fountain (Hot)

NPS Photo/Mitch Smith
Quick Facts
Amenities
2 listed
Water - Bottle-Filling Station, Water - Non-Potable
Water averages 143º Fahrenheit/62º Celsius
Mineral content in parts per million (ppm)
Silica (SiO2) 53.0
Bicarbonate (HCO3) 130.0
Calcium (Ca) 47.0
Sulfate (SO4) 7.8
Magnesium (Mg) 4.9
Chloride (Cl) 2.2
Sodium (Na) 4.0
Fluoride (F) 0.26
Potassium (K) 1.4
Oxygen (O2) 4.5
Free Carbon Dioxide (CO2) 9.7
Radioactivity through radon gas emanation is 43.3 picocuries per liter.