R.I. Gen. Laws § 39-4-11.1: Order to rebate or cancel charges.

Whenever the division of public utilities and carriers is in receipt of a determination that drinking water is not safe and potable, as determined by certification of the director of health, the division shall thereupon order the public utility to rebate to or credit the accounts of its consumers, the cost of the drinking water distributed during the period, or a portion thereof, as the division, by its rules and regulations, may determine; and, provided further, that the director of health shall certify to the division the date upon which it is determined that drinking water is restored to safety and potability.