§ 1117. Realty subdivisions; duty of county clerk or register in respect to filing of plans and map. The county clerk or register shall not file nor record nor accept for filing or recording any map or plat showing a subdivision of land in any town, village or city having a population of less than one million unless there is endorsed thereon or annexed thereto a certificate of the department or city, county or part-county department of health having jurisdiction approving the water supply system proposed or installed for such subdivision and consenting to the filing thereof.