N.J. Stat. Ann. § 58:14-17

The total cost and expense of constructing said intercepting sewer, plant and works shall include the expenses of the commissioners incurred prior to March eighteenth, one thousand nine hundred and seven, and not otherwise provided for, not exceeding the sum of twenty-five thousand dollars, also the cost of preliminary maps, plans, specifications and estimates herein referred to, also the salary or other compensation of the commissioners up to the completion of such intercepting sewer, plant and works, together with all incidental expenses of maintaining their corporate organization and of clerical and engineering services, and the reasonable compensation of counsel which they are hereby authorized to employ.