A whole house filter system designed for nitrate and nitrite treatment can be an important addition to homes dealing with elevated levels of these contaminants. This digital nitrate and nitrite filtration system uses 1 cubic foot of selective resin with a Fleck 5600SXT metered control valve. The system is designed for on-demand regeneration and can treat flow rates of up to 8 GPM. https://store.afwfilters.com/w....hole-house-filters/?