N.J. Stat. § 40:14B-57
Each county and municipality owning or operating any system of water distribution serving 3 or more parcels of real property in the district shall, and every other person owning or operating any such system may and is hereby authorized to enter into and perform a contract with the municipal authority that it will, upon request by the municipal authority specifying a parcel of real property in the district with regard to which a service charge under section 22 of this act is unpaid, cause the supply of water from its system to such parcel of real property to be stopped or restricted, as the municipal authority may request, until such service charge and any subsequent service charge with regard to such parcel and the interest accrued thereon shall be fully paid or until the municipal authority directs otherwise. No such county, municipality or other person shall be liable for any loss, damage or other claim based on or arising out of the stopping or restricting of such supply, and the municipal authority shall pay the reasonable cost of so stopping or restricting such supply and of restoring the same and may agree to indemnify such county, municipality or other person from all loss or damage by reason of such stopping or restriction, including loss of profits.
N.J.S. § 40:14B-57