Essential services
Services provided by public and private utilities, necessary for the exercise of the principal use or service of the principal structure. These services include underground, surface, or overhead gas, electrical, steam, water, sanitary sewerage, stormwater drainage and communication systems and accessories thereto, such as poles, tower, wires, mains, drains, vaults, culverts, laterals, sewers, pipes, catch basins, water storage tanks, conduits, cables, fire alarm boxes, police call boxes, traffic signals, pumps, lift stations and hydrants, but not including buildings used or intended to be used for human habitation.