N.J. Stat. § 40:62-133.14
The State of New Jersey hereby pledges to and covenants and agrees with the holders of any bonds issued pursuant to a bond resolution of the commission that the State shall not limit or alter the rights vested in the commission to fix, establish, charge and collect its water rates and to fulfill the terms of any agreement made with the holders of the bonds or other obligations, and shall not in any way impair the rights or remedies of the holders, and shall not modify in any way the exemptions from taxation provided for in this amendatory and supplementary act, until the bonds, together with interest thereon, with interest on any unpaid installments of interest, and all costs and expenses in connection with any action or proceeding by or on behalf of the holders are fully met and discharged.
N.J.S. § 40:62-133.14