The code requirement for "an adequate supply of potable running water" is primarily for which purpose?

The requirement for "an adequate supply of potable running water" is primarily for cleansing and sanitation. This is fundamental to public health and safety, as access to safe, clean drinking water is essential for personal hygiene, food preparation, and overall sanitation practices. The presence of potable water allows individuals to wash hands, clean surfaces, and maintain a hygienic living environment, which is crucial in preventing the spread of diseases.

While the other options like industrial processes, irrigation and drainage, and fire protection may also utilize water, the primary focus of ensuring there is an adequate supply of potable water in plumbing codes is directed towards maintaining health standards and preventing contamination that could arise from inadequate sanitation. This highlights the importance that the code places on individual and community well-being regarding water use and accessibility.