R.I. Gen. Laws § 23-22-4: Chemical and bacteriological analyses of water.

The department of health shall cause to be made chemical and bacteriological analyses of samples of water from each swimming pool and shall report its findings to the person maintaining that swimming pool and shall state in that report whether or not the condition of the water is detrimental to the health and safety of the users of the swimming pool. The first analyses of samples of water from a newly opened swimming pool shall be made within thirty (30) days after the receipt of an application for a license for that swimming pool.