Which factor does NOT influence the selection of pipe materials in a distribution system?

Selecting pipe materials for a water distribution system involves various critical factors to ensure the system's efficiency, safety, and longevity. Among these, aesthetic considerations do not play a substantial role in the selection process.

Water chemistry is vital because certain materials may corrode or react negatively with the water quality, leading to contamination or deterioration of the piping. Pressure requirements are also a critical consideration, as different materials have varying strengths and capabilities to withstand the pressures within the system. Cost is a significant factor that influences the overall budgeting and feasibility of installation and maintenance.

In contrast, aesthetic considerations pertain more to visual appeal and may impact elements such as the appearance of above-ground installations but do not affect the fundamental performance or functionality of the piping in a distribution system. Therefore, while aesthetics might be considered in some instances, they do not influence the technical choice of materials like the other factors do.