Notwithstanding any regulation or order of the Public Utilities Regulatory Authority which permits the imposition of a late payment charge by a public service company on customer bills, the state and any political subdivision thereof:
Conn. Gen. Stat. § 4a-74
(P.A. 75-267; P.A. 77-614, S. 162, 610; P.A. 80-482, S. 5, 348; P.A. 11-80, S. 1.)