"Bathing water", fresh or salt water adjacent to any public bathing beach or semi-public bathing beach in the commonwealth.
"Department", the department of public health.
"Public bathing beach", a beach open to the general public, whether or not an entry fee is charged, that permits access to bathing waters.
"Semi-public bathing beach", a bathing beach used in connection with a hotel, motel, trailer park, campground, apartment house, condominium, country club, youth club, school, camp or similar establishment where the primary purpose of the establishment is not the operation of the bathing beach, and where admission to the use of the bathing beach is included in the fee paid for use of the premises. A semi-public bathing beach shall also include a bathing beach operated and maintained solely for the use of members and guests of an organization that maintains such a bathing beach.
The department shall also ensure that the provisions of this section and the regulations promulgated thereunder are implemented in a cost effective manner by encouraging, where possible, regional approaches or other cost effective means of carrying out the purposes of this section.
Mass. Gen. Laws ch. 111, § 5S