Such uses shall be limited to the erection, construction, alteration
or maintenance, by public utilities or municipal or other governmental
agencies, of electric, gas, water transmission or distribution/collection
systems, telephone and cable television lines, communication, water
supply or sewage treatment and collection systems, including poles,
wires, mains, drains, sewers, pipes, conduits, cables, fire alarm
boxes, police call boxes, traffic signals, light stanchions, telephone
lines, hydrants and other similar equipment and accessories in connection
therewith reasonably necessary for the furnishing of adequate services
by public utilities or municipal or other governmental agencies for
the public health, safety or general welfare, but not including buildings.