R.I. Gen. Laws § 44-7-21
The powers granted and the duties imposed by chapters 7 - 9 of this title and their applicability to any persons, tax districts, or circumstances shall be construed to be independent and severable, and if any one or more sections, clauses, sentences, or parts of these chapters, or their applicability to any persons, tax districts, or circumstances shall be adjudged unconstitutional or invalid, the judgment shall not affect, impair, or invalidate the remaining provisions of these chapters, or their applicability to other persons, tax districts, or circumstances, but shall be confined in its operation to the specific provisions held unconstitutional and invalid and to the persons, tax districts, and circumstances affected by that invalidity.
R.I. Gen. Laws § 44-7-21