N.Y. Pub. Health Law § 1116

§ 1116. Realty subdivisions; plans required to be filed and approved.\n1. No subdivision or portion thereof shall be sold, offered for sale,\nleased or rented by any corporation, company or person, and no permanent\nbuilding shall be erected thereon, until a plan or map of such\nsubdivision shall be filed with and approved by the department or city,\ncounty, or part-county department of health having jurisdiction and in\nthe county of Suffolk until a plan or map shall have been also filed\nwith and approved by the county department of environmental control and\nsuch plan or map thereafter filed in the office of the clerk of the\ncounty in which such subdivision is located.\n 2. Such plan or map shall show methods for obtaining and furnishing\nadequate and satisfactory water supply to said subdivision.\n 3. The installation of such facilities shall be in accordance with the\nplans or any revision or revisions thereof approved by the department or\ncity, county or part-county department of health having jurisdiction.\n