Iowa Code § 167.11: Disposal plants — specifications.

Each place for the carrying on of said business shall, to the satisfaction of the department, be provided with floors constructed of concrete, or some other nonabsorbent material, adequate drainage, be thoroughly sanitary, and adapted to carrying on the business.

This section shall not apply where the state building code, as adopted pursuant to section 103A.7, has been adopted or when the state building code applies throughout the state.