NY Gen Mun L § 120 (2021)
2021 New York Laws GMU - General Municipal Article 6 - Public Health and Safety 120 - Contracts for Purification of Water and Sewerage.

§  120.  Contracts  for  purification of water and sewerage. The local   authorities of the several counties, cities, towns and villages  of  the   state  having  charge of the supply of water and the care of sewerage in   their respective localities, are hereby authorized, on behalf  of  their   counties,  cities,  towns  and  villages,  respectively,  to  enter into   contracts  with  the  owners  of  any  process  or  apparatus  for   the   purification  of water and sewerage whether protected by patents or not,   and either contract for the use of apparatus and process for a  term  of   years  or for the purchase of the same, as to them shall seem advisable.   It shall be lawful for any two or more of such  municipalities  in  this   state,  without  regard  to  the  form of their incorporation, including   towns or sewer  districts  of  towns,  to  jointly  construct,  provide,   maintain  and operate a comprehensive system of sewerage including trunk   lines and laterals, or a system of conveying or conducting sewerage from   said municipalities from a point or points to be agreed upon to a common   destination or disposal plant or plants, and to construct, maintain  and   operate  within or without the said municipalities or any of them one or   more  outlet  or  trunk  sewers,  plants,  works  or  stations  for  the   treatment,  disposal, or rendering of sewerage, or any such municipality   or any such municipalities may jointly or  severally  contract  for  the   construction  for  it  or  them  of  any  such system, extension or part   thereof, including any such sewers, plants, works or stations, and agree   to pay annually, semi-annually or quarterly for the  use  or  possession   thereof,  by  way  of permanent rental reserved therefor; or such lawful   authorities of the respective municipalities may  jointly  or  severally   contract   with  any  person,  persons  or  corporation  or  with  other   municipalities or sewage districts for the removal of sewage within  the   boundaries  of such local government, upon such reasonable terms as they   may agree upon. And to that end the governing bodies or  boards  of  any   two  or  more  municipalities,  including  sewer  districts  of  a town,   authorized by law to have charge of sewer systems established or  to  be   established  in  said  municipalities,  or  sewer  districts  of a town,   respectively, may unite and jointly cause to  be  made  at  their  joint   expense  (each  district  bearing a part of the expense in proportion to   the assessed valuation of real estate in such district, or on such other   basis or division as may be jointly agreed upon) by competent engineers,   mechanics and others, surveys, maps, plans,  reports  and  estimates  of   proposed  works  and  improvements  relating to such contemplated public   improvement or works authorized by this act, which  such  municipalities   may  desire  to  jointly  provide,  maintain, operate or lease under the   authority conferred by this act, and for such purpose they may determine   upon the final route and plan for the building or construction  of  such   sewerage system and for the making of such surveys, maps, plans, reports   and  estimates  as  provided in this section. It shall be lawful for the   officers and agents of such municipalities to enter at  all  times  upon   any  lands or waters for the purpose of exploring, surveying, and laying   out the route of such sewerage system.