(41) “Essential service” means the location, erection, construction, reconstruction, change, alteration, maintenance, removal, use or enlargement by public utilities or municipal or other governmental agencies of underground or overhead gas, electrical, steam or water generation, transmission or distribution systems, including buildings, structures, towers, poles, wires, mains, drains, sewers, pipes, conduits, cables, fire alarm boxes, police call boxes, traffic signals, hydrants and other similar equipment or accessories and the use of land in connection therewith, for the furnishing of adequate service by such public utilities or municipal or other governmental agencies or for the public health, safety and general welfare.