Potentially high levels of arsenic, nitrate, and perchlorate are found in water sources throughout the United States. Most treatment technologies for removing these contaminants produce concentrated waste that requires special handling and disposal. Disposal options for these wastes are often limited by local regulations and other site-specific restrictions. Presently, the disposal issue is limiting certain treatment technologies for arsenic, perchlorate, or nitrate. Therefore, innovative alternatives for managing residuals discharge and disposal are needed. The objectives of this project were to develop and validate innovative processes to minimize the production of residuals from treatment processes used to remove arsenic, perchlorate, or nitrate from drinking water.