(41) Essential Services: The erection, construction, reconstruction, change, alteration, maintenance, removal or, use of any underground or overhead equipment including towers, poles, wires, mains, drains, sewers, pipes, conduits, cables, signals, hydrants, or other similar accessories by any public utility or governmental agency for the purpose of furnishing adequate supply, transmission, distribution, collection, or disposal of gas, electric, water, steam, or communication service to the public in order to maintain the public health, safety, and welfare, but not including buildings.