N.J. Stat. § 40:62-146
The commission may contract with any municipality or municipalities to furnish a supply of water for such other municipalities and their inhabitants, for public and private uses, for the term of a year or years. There shall first be obtained the approval of the State board or department having jurisdiction of such matters, which approval and consent such commission or other board or departments may withhold or grant upon such terms as it may deem proper, but in case approval and consent are withheld, the reason for such withholding shall be furnished by the department or board to the commission applying therefor. The contract may provide for the payment to the commission by the municipality annually or otherwise of the sum or sums of money, computed at fixed amounts or by a formula based on any factors or other matters described in R.S. 40:62-127 or in any other manner, as the contract or contracts may provide, and may provide that the sum or sums so payable to the commission shall be in lieu of all or any part of the water rents which would otherwise be charged and collected by the commission with regard to the dwellers within the municipality. The contract may be made with or without consideration and for a specified or an unlimited time and on any terms and conditions which may be approved by the municipality and which may be agreed to by the commission in conformity with its contract with the holders of any bonds, and shall be valid whether or not an appropriation with respect thereto is made by the municipality prior to authorization or execution thereof. The municipality is authorized to perform any acts necessary, convenient or desirable to carry out the contract and to provide for the payment or discharge of any obligation thereunder in the same manner as are other obligations of the municipality. Subject to these contracts with the holders of bonds, the commission is authorized to perform any acts necessary, convenient or desirable to carry out the contract and, to provide for the payment or discharge of any obligation thereunder in the same manner as are other obligations of the municipality. Subject to these contracts with the holders of bonds, the commission is authorized to perform any acts necessary, convenient or desirable to carry out the contract and, in accordance with the contract, to waive, modify, suspend or reduce the water rents which would otherwise be charged and collected by the commission with regard to the dwellers within the municipality, but nothing in this section or the contract shall prevent the commission from charging and collecting, as if the contract had not been made, water rents with regard to the dwellings sufficient to meet any default or deficiency in any payments agreed in the contract to be made by the municipality.
N.J.S. § 40:62-146