New Jersey Statutes Title 40. Municipalities and Counties 40 § 13-2

In order to provide such public health service, the joint contract between any county and one or more municipalities, or one or more school districts or any of them, may be made with any regularly incorporated health society, board or association regularly organized not for pecuniary profit, which contract shall provide in detail the extent, manner and specifications of the public health work to be done thereunder by such health society, board or association, and shall be for the benefit of all the inhabitants in the territory covered by the contract.