Healthy Water
Calcium Sulfite and Water Filters
Dispelling the myths behind the hyperbole Calcium sulfite, or CaSO3, as used in water filtration systems, is largely insoluble in water. Over the 10-12,000 gallon lifetime of our shower filter cartridges, less than 6/100ths (0.06) of 1% will dissolve, but that is only in the coldest water (0ºC/32ºF). In hotter water that diminishes to 1/100th (0.01) of a single percent. Let’s imagine, for example, that you indulge in a luxurious eight-minute shower, with a flow rate of 2.1 gallons per minute....
