ARM 36.15.903. FLOOD PROOFING REQUIREMENTS FOR PLUMBING SYSTEMS

(1) Plumbing systems for allowed and permitted floodplain and floodway uses shall conform to the following conditions: (a) Sewer lines, except those to buried and sealed vaults, must have check valves installed to prevent sewage backup into permitted structures; and (b) All toilet stools, sinks, urinals, and drains must be located such that the lowest point of possible water entry is at least 2 feet above the elevation of the base flood.