What are typical characteristics of potable water distribution systems and what engineering issues underlay their design?
Kirmeyer began by reviewing key components and characteristics of a distribution systems [see attachment.] Distribution systems, historically, have been designed primarily to meet flow, pressure, and storage requirements for emergency and future development needs, not water quality concerns. Maintaining water quality is now recognized as an important element. Each system is unique and has individual needs and problems. A major component of distribution systems is continual maintenance. In summary: • Each “system” is unique in its design, operations and maintenance requirements. • There are many places to check for design guidance – state standards, state design manuals, AWWA and AWWARF guidance. Question 2: What are the steps which utilities take to maintain water quality in the distribution system? Kirmeyer based answers to this question on three AWWARF reports [see Attachment]. Water quality is affected by physical, chemical and microbiological parameters. To maintain water quality K
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