AWWA JAW10875

Much current research is directed towards acid deposition and its effects on aquatic ecosystems, forests, agriculture, building materials, cultural structures, and health. Preliminary research indicates that small water supplies fed by surface waters or shallow wells and cistern supplies may be adversely affected by acid deposition. Water supplies are affected by delivery of contaminated water to the catchment area, mobilization of contaminants within the catchment, and mobilization of contaminants by corrosion of distribution systems. The last effect may result in dangerous quantities of heavy metals in distribution systems, although this will not be a problem with relatively hard water or with relatively large supplies. Probable effects on water supplies are outlined according to type of supply or catchment, treatment or nontreatment, and pipe material in the distribution system. Includes 23 references, table, figures.