This document also describes EPA's analysis of other prospect contaminants, such as Legionella pneumophila 4 haloacetonitriles (dichloroacetonitrile, dibromoacetonitrile, trichloroacetonitrile, and bromochloroacetonitrile) 1,2,3-trichloropropane and "total natural and organic fluorine" (TOF), and invitations public remark.