Section 410-B. 1

Special water districts. Real property in the county of
  Oswego owned by a  special  water  district,  not  within  its  district
  boundaries  and  used  as  a  pumping  station,  water  treatment plant,
  pipeline and/or  reservoir,  including  all  necessary  connections  and
  appurtenances, for purposes of drawing water from Lake Ontario, shall be
  wholly  exempt  from  taxation and exempt from special ad valorem levies
  and special assessments to the extent provided in section  four  hundred
  ninety  of this chapter if: (a) such special district makes available to
  customers within the county of Oswego at least  twenty-five  percent  of
  the  water  drawn  from  Lake  Ontario; (b) the municipal corporation in
  which such property is situated  shall  use  or  shall  have  created  a
  special  assessment  district to use water from any of the facilities of
  said special water district; and (c) said special water  district  makes
  water  available  to  any users in such municipal corporation or special
  assessment district at the same rate as  it  is  supplied  in  the  said
  special  water  district to users in the municipal corporation where the
  said special water district's pipeline first enters  the  special  water
  district.  As used herein, "rate" shall include all user charges and any
  charges imposed upon real property by the special water district for the
  cost of capital improvements.
    2.  Real property in the county of Cayuga owned  by  a  special  water
  district,  not  within its district boundaries and used or to be used as
  or for  a  pumping  station,  water  treatment  plant,  pipeline  and/or
  reservoir,  including  all  necessary connections and appurtenances, for
  the purpose of supplying or drawing water from Lake  Ontario,  shall  be
  wholly  exempt  from  taxation and exempt from special ad valorem levies
  and special assessments to the extent provided in section  four  hundred
  ninety of this chapter if: (a) at any time hereafter, such special water
  district,  at the request of the county of Cayuga, supplies to customers
  within the county of Cayuga water drawn from Lake Ontario, and (b)  said
  special  water  district  makes  such water available to users in Cayuga
  county at the same  rate  as  it  is  supplied  to  users  in  the  most
  northwesterly  town  located within said special water district. As used
  herein, "rate" shall include all user charges and  any  charges  imposed
  upon real property by the special water district for the cost of capital
  improvements.