N.J. Stat. § 58:5-25
Any municipality desiring to take water from any plant constructed, acquired or operated, or which is in course of construction or acquisition, by any district water supply commission under the authority conferred by this chapter, may file a petition with the commission setting forth the amount of water that the municipality desires to take and the period at which it desires to commence such taking. The commission shall thereupon fix a time and place for a hearing of the application and give to each municipal corporation under contract with the commission in relation to said water supply at least thirty days' notice in writing mailed to the clerk or secretary of the board or body having charge of the water supply of the municipal corporation.
N.J.S. § 58:5-25