New Jersey Statutes Title 58. Waters and Water Supply 58 § 4A-13

a. Any operation on the drilling, boring, coring, driving, jetting, digging, sealing or other construction or repair of wells shall be under the immediate on-site supervision of a licensed well driller of the proper class, and the name of the well drilling contractor shall be displayed on the equipment used by such driller.

b. Any installation, removal, alteration, or repair of well pumping equipment or appurtenances shall be under the immediate on-site supervision of a licensed pump installer or a licensed well driller, and the name of the pump installing contractor or well drilling contractor shall be displayed on the equipment used in the installation, removal, alteration or repair.

c. Nothing in P.L.1947, c. 377 (C.58:4A-5 et seq.) shall be construed as applying to the drilling of blast holes in quarries or mines;  or to persons licensed pursuant to, and acting in accordance with, P.L.1968, c. 362 (C.45:14C-1 et seq.);  or to excavations that do not endanger or threaten subsurface or percolating waters or endanger life and that are not defined as a well pursuant to section 19 of P.L.1947, c. 377 (C.58:4A-23), including, but not limited to, septic system installations, wetlands determinations, and site suitability studies.