This slide presentation outlines information on emerging contaminants and the role of utilities. Topics covered include: salinity as an emerging contaminant; salinity as a worldwide problem; cost of high salinity; Central Arizona Salinity Study (CASS); sources of salinity; Phoenix area TDS project; Palo Verde Residuals Study; cooling towers TDS study; AwwaRF multi-city study; 23rd Avenue WWTPMembrane/Dewvaporation Demonstration Project; TDS regulatory limits evaluation; and, future plans.