R.I. Gen. Laws § 46-14-4: Prosecutions of violations — Liability for costs.

The director of health, the commissioner of environmental management or the director of the department of environmental management until such time as the governor provides by executive order for the actual transfer of functions from the department of environmental management to the department of the environment pursuant to the provisions of § 42-17.1-40, the chief of police of any city or town in which a violation of this chapter occurs, or the president of the town council of any town, or the mayor of any city, or the executive officer of any district, institution, or company whose water supply is involved, is authorized to prosecute all violations of this chapter and shall not be required to give surety for costs upon complaints he or she enters.