Copper water distribution pipe must conform to which standard?

The standard that copper water distribution pipe must conform to is NSF 61, which addresses health effects. This standard is crucial because it ensures that the materials used in plumbing systems do not leach harmful substances into drinking water. NSF 61 evaluates the health effects of various products that come into contact with drinking water, providing assurance that they are safe for public use. Adhering to this standard is particularly important for materials involved in water distribution, such as copper pipes, which play a critical role in maintaining the quality of potable water.

The other standards mentioned are related to different aspects of plumbing and material specifications, but they do not specifically address the health safety of water distribution products like NSF 61 does. For instance, ASTM D2665 pertains to the specifications for PVC pipe, ANSI 14 deals with thermoplastic pipe specifications, and ASTM F876 covers cross-linked polyethylene (PEX) tubing. While these are important in their contexts, they do not directly relate to the safety of copper water distribution pipes as per health standards.