Section 46. Corporations may contract with other cities, towns or villages; certificate of extension; effect of merger

When  any  such  corporation
  has  entered  into  a contract with the authorities of any city, town or
  village not mentioned in its certificate of incorporation, but  situated
  in  the  same county as the city, towns or villages mentioned therein or
  in an adjoining county, to supply it with pure and wholesome  water,  it
  may file a certificate which shall be entitled and endorsed "certificate
  of  extension  of  territory  of ........ .................. pursuant to
  section forty-six of the transportation  corporations  law"  (the  blank
  space  being filled in with the name of the corporation) and which shall
  state:
    1. The name of the corporation, and, if it has been changed, the  name
  under which it was originally incorporated.
    2. The name of such other city, town or village to be so supplied with
  water.
    Such  certificate shall be signed and acknowledged by the president or
  a vice-president and the secretary or  an  assistant  secretary  of  the
  corporation,  who  shall make and annex an affidavit that they have been
  authorized to execute and file the same by the vote of a majority of the
  directors of the corporation.
    Such certificate shall be filed in each public  office  in  which  the
  certificate  of  incorporation  is  filed.  Any  corporation  which  has
  heretofore filed  or  shall  file  such  certificate  as  aforesaid  may
  thereupon  supply  any such city, town or village with water in the same
  manner and with the same rights and subject to the same requirements  as
  if  it  had been named in the original certificate of incorporation, and
  as if such certificate  of  incorporation  had  had  annexed  thereto  a
  consent  to the formation of the corporation, signed and acknowledged by
  the local authorities of  such  municipal  corporation,  as  defined  in
  section forty-one of this chapter.
    The right of merger of waterworks corporations shall not be limited to
  corporations  operating  in  the  same  or  adjoining counties, and if a
  waterworks corporation be merged pursuant to law with another waterworks
  corporation  operating  in  the  state,  any  municipal  corporation  or
  political  subdivision  of  the  state, and any public officer, board or
  body, authorized by statute to contract with such a merged  corporation,
  shall  have  power and authority to contract and deal with the possessor
  corporation in the same manner and with the same  effect  as  with  such
  merged corporation.