Is the use of plastic pipe for water softeners a universal standard?

The use of plastic pipe for water softeners is not a universal standard, and this is largely influenced by regional variances in building codes, material availability, and specific environmental conditions. Different areas might have preferences for materials based on factors such as local water quality, climatic conditions, and the regulations set by local authorities. For example, some regions might prioritize the use of metal pipes due to their durability and resistance to certain environmental factors, while others may employ plastic for its corrosion resistance and ease of installation. Therefore, the adoption and standards for piping materials can differ significantly from one location to another, making option B the accurate choice.