AWWA ACE61751

This slide presentation outlines results from the AWWA Disinfection Practices Survey. The survey's objectives were to: collect basic information regarding drinking water utilities' secondary disinfection practices; report on what percentage of drinking water utilities currently use chloramines, chlorine, or no secondary disinfectant; what percentage of those utilities not currently using chloramines intend to convert to chloramines; and, information on current secondary disinfection practices. Topics covered include: survey design and implementation; response demographics; overview of responses on secondary disinfection practices; geographic location, system size, and primary source water of secondary disinfection practices; percentage of utilities planning to convert to using chloramines and reasons why; target residual concentrations of utilities using chloramines; percentage of utilities experiencing nitrification problems that use chloramines; nitrification control strategies; and, common problems encountered when using chloramines.