Teaches the process fundamentals of (1) granular activated carbon adsorption (2) UV, ozone and advanced oxidation processes (3) membrane filtration and reverse osmosis treatment and (4) ion exchange. These processes, as applied to impaired water sources, including brackish/saline/saltwater and wastewater reuse, will address water quality parameters including pathogenic microorganism, background organic matter, specific organic contaminants, metals and salts.