§ 17-1712 Water districts. In every such village any water districts created or organized under the provisions of the town law, shall continue and the board of trustees shall be and they are hereby vested with the full management and control of such districts, and the water systems constructed therein, and the assessment of the cost and expenses thereof, which water districts shall until discontinued in the manner hereinafter provided, be managed, controlled and operated and may be extended or enlarged, by said board of trustees in the manner provided in the town law; provided, however, that if any such village shall adopt a general village water system, such water district or districts may be discontinued upon the adoption of a proposition for such discontinuance at a village election. In every such village any water supply district organized under the town law or under the transportation corporations law shall continue and the boundaries thereof may be extended or modified by the board of trustees, or the board of trustees may establish one or more additional water supply districts in said village, by filing a certified copy of a resolution describing the bounds thereof as extended or modified, or as established by the board of trustees, in the office of the village clerk; and may contract with any corporation in the name of the village to supply water for fire or other public purposes to any such district or districts, or in case any such village shall own or operate a water supply system the board of trustees may supply water therefrom to any such district or districts for such purposes and fix the amount of the rentals and charges therefor; and the rentals or expenses thereof under any such contract, or for the supply of water by the village shall annually, and in the same manner as other expenses of the village are raised, be assessed, levied upon and collected from the taxable property within such water supply districts, respectively. No such contract shall be made for a longer period than five years, nor shall the tax in any year for such rentals and expenses exceed four mills on each dollar of the assessed value of the taxable property within any such water supply district.