Which of the following characteristics is NOT important in selecting a pipe material?

In the context of selecting a pipe material for water distribution systems, color is not a critical characteristic compared to factors like strength, corrosion resistance, and cost.

Strength is essential because pipes must withstand internal pressures, external loads, and environmental stresses without failing. Corrosion resistance is equally important, especially in water distribution systems, as water can contain various minerals and chemicals that may corrode certain materials, leading to leaks and contamination. Cost is a practical consideration; the material chosen must fit within budget constraints while meeting all necessary performance criteria.

In contrast, color does not impact the performance, durability, safety, or functionality of the pipe material in a significant way. While the appearance of pipes might matter in some aesthetic applications, such as visible installations, it does not influence the ability of the pipe to perform its primary function, which is to transport water safely and effectively. Therefore, in the context of water distribution, color is not an essential factor in material selection.