Drinking water quality can degrade as the water travels through the distribution system. This book describes causes of water-quality degradation in the distribution system and provides solutions to all common water quality problems.Information is organized into nine sections: 1. Introduction -- Five critical steps to achieving and maintaining distribution system water quality 2. Microbiological Issues -- Control of biofilm growth and eliminating pathogens in the distribution system 3. Chemical & Physical Issues -- Maintain disinfectant residuals and reduce disinfectant by-products. 4. Chloramine Conversion Issues -- Gain the benefits of chloramines as a residual disinfectant, while controlling nitrification and taste-and-odor problems. 5. Corrosion Control -- Minimize or eliminate the effects of pipeline corrosion on water quality. 6. Rapid or Real-Time Monitoring -- Optimize distribution system operation and water quality, even as conditions change. 7. Operational Practices -- Distribution system operation strategies that will assure pristine water quality all the way to customers' taps. 8. Flushing to Maintain Water Quality -- Flushing practices to preserve water quality. 9. Water Quality Computer Modeling (Computer-Aided Network Analysis) -- Accuratly predict changes in delivered water quality caused by changes in treatment or distribution operations.