Section 1118. Realty subdivisions; local regulations

1. Any city or county
  which  has  established  or  establishes  a  city, county or part-county
  department of health may adopt  regulations  for  the  control  of  such
  developments.  Regulations  adopted  by a county or city board of health
  may include, but not be limited to, establishment of  such  requirements
  as  it  may  deem  necessary to guarantee the installation of such water
  supply in accordance with the plans heretofore or  hereinafter  approved
  by  the  county or city department of health or any approved revision or
  revisions thereof.
    2. Nothing contained in sections one thousand one hundred  fifteen  to
  one  thousand  one hundred eighteen of this chapter, inclusive, shall be
  construed  to  delegate  the  general  powers  of  the   department   of
  environmental  conservation nor to impair nor to deprive such department
  of its powers and functions as now provided by law.