Manganese greensand is used for removing soluble iron, manganese, and hydrogen sulfide from well water supplies. It is a purple black filter medium processed from glauconitic greensand. It is used in vertical and horizontal pressure filters as well as open gravity filterr systems. There are two distinct treatment processes associated with the use of manganese greensand that is specifically, the intermittent regeneration and the continuous regeneration both of which have become industry standards. Both the processes are relatively uncomplicated in both their design and operation and result in an efficient, reliable method for iron and manganese removal.