R.I. Gen. Laws § 23-19.3.1-4

The local building official is authorized to enforce the provisions of this chapter pursuant to those enforcement duties in § 23-17.3-108.1 and shall approve the connection to the sanitary sewer system only if a check valve has been installed. Such approval shall be consistent with the rules and regulations promulgated by the state building code standards committee in accordance with § 23-19.3.1-5.