Section 1116. Realty subdivisions; plans required to be filed and approved

1. No subdivision or portion thereof shall be sold,  offered  for  sale,
  leased or rented by any corporation, company or person, and no permanent
  building  shall  be  erected  thereon,  until  a  plan  or  map  of such
  subdivision shall be filed with and approved by the department or  city,
  county,  or  part-county department of health having jurisdiction and in
  the county of Suffolk until a plan or map shall  have  been  also  filed
  with  and approved by the county department of environmental control and
  such plan or map thereafter filed in the office  of  the  clerk  of  the
  county in which such subdivision is located.
    2.  Such  plan  or map shall show methods for obtaining and furnishing
  adequate and satisfactory water supply to said subdivision.
    3. The installation of such facilities shall be in accordance with the
  plans or any revision or revisions thereof approved by the department or
  city, county or part-county department of health having jurisdiction.