AWWA DSS71294

As new regulations drive utilities to look more closely at the water quality in their distribution systems, new strategies and approaches must be used to evaluate and maintain high quality water from the source at the treatment plant throughout the entire distribution system. This paper addresses the emerging focus on distribution system water quality, and provides the drivers for this focus including security issues and regulatory changes. The tools necessary to evaluate water quality in the pipe network are also discussed, including monitoring approaches as well as modeling programs. Specific approaches and techniques for improving water quality are presented, including storage tank mixing and other new technologies for the distribution system. The value of this approach is discussed, along with the benefits that utilities will receive from putting an emphasis on maintaining high quality water from the source to the tap. Includes 5 references.