Be it enacted by the Senate and House of Representatives
in General Court assembled, and by the authority of the same,
Notwithstanding the provisions of section forty-two H of chapter forty of the General Laws or any other general or special law to the contrary, under the Topsfield "Water Supply Betterment By-Law" voted under ARTICLE THIRTY EIGHTH of the May sixth, nineteen hundred and eighty-seven town meeting and as amended, in addition to the methods of assessing costs provided under said section forty-two H of said chapter forty, said By-law shall provide an additional option as follows: Costs may be apportioned equally among the owners of property receiving benefit from the betterment, provided that a majority vote of the eligible voters present when a vote is taken on the method of assessing costs vote in favor of this method.
Said additional option shall be applicable to said vote on the method of assessment to be taken concerning the betterment zone voted under ARTICLE THIRTY NINTH of the May six, nineteen hundred and eighty-seven town meeting. Said vote to be taken within thirty days from the effective date of this special law. Such determination by said vote shall become effective in lieu of any previous vote, and the board of water commissioners shall certify the actual expenditures and determine the actual assessment to be apportioned within forty-five days from the date when said vote is taken on said additional option, or take any other action relative thereto.