Which of the following is NOT a basic requirement for pipes in water distribution systems?

In the context of water distribution systems, the basic requirements for pipes focus primarily on their functional performance and the safety of the water they carry. Strength and durability are critical because pipes must withstand various pressures and environmental conditions throughout their operational life. Similarly, the ability to resist corrosion is essential to ensure that the pipes do not degrade over time, which could lead to leaks or contamination of the water supply.

Another fundamental requirement is that the pipes must not have any adverse effects on water quality. This is vital for public health, as pipes that leach harmful substances or materials can compromise the safety of drinking water.

While low manufacturing cost may be a consideration in the overall project budget, it is not a fundamental requirement for the functionality or safety of the pipes themselves. The focus is primarily on the performance characteristics that ensure the reliability and integrity of the water distribution system. Therefore, while cost is an important aspect of the decision-making process, it does not fit into the core requirements for the pipes used in water systems.