R.I. Gen. Laws § 5-20-38
Any person who is a licensed individual sewage disposal system installer under the provisions of chapter 56 of this title is authorized to make residential water supply connections to residential dwellings consisting of three (3) units or less, both public or private, at the source of the public and/or private supply for the purpose of installation, alteration, and/or repair. Water installations, alterations, and repairs mean and include the piping and connections from the source of public or private water supply to the building or premises. Licensed individual sewage disposal system installers are required to comply with city or town permits and inspection requirements as to water supply installations, alterations, and/or repairs. In no event shall licensed individual sewage disposal system installers be allowed to perform any work on fittings or fixtures beyond the initial premises connection.
R.I. Gen. Laws § 5-20-38