N.Y. Gen. Mun. Law § 119-h

§ 119-h. Development of common facilities. Common drainage facilities\nmay be acquired and developed by all of the contracting municipalities\nacting jointly or by the individual action of one of the contracting\nmunicipalities, acting for all of the contracting municipalities, as\nsuch municipalities may provide in the contract. Regardless of the\nmethod agreed upon, title to all real or personal property acquired or\nconstructed shall be held jointly in the names of all of the contracting\nmunicipalities subject to such provisions for disposition as the\ncontract between such municipalities may contain.\n