R432-12-22. Drainage Systems

(1) Drainage piping may not be installed within the ceiling or installed in an exposed location in food preparation centers, food serving facilities, food storage areas, central services, and other sensitive areas. Where overhead drain piping is unavoidable in these areas, as may occur in existing facilities, special provision shall be made to protect the space below from possible leakage, condensation, or dust particles.

(2) Building sewers shall discharge into a community sewerage system. Where such a system is not available, the facility shall treat its sewage in accordance with local and state regulations.