- Electric services (96)
- Natural gas transmission (2)
- Gas transmission and distribution (3)
- Natural gas distribution (37)
- Electric and other services combined (2)
- Gas and other services combined (2)
- Combination utilities, nec (2)
- Water supply (8)
- Sewerage systems (4)
- Refuse systems (139)
- Sanitary services, nec (19)
- Steam and air-conditioning supply (1)
- Irrigation systems (9)