Aqueduct
Air chamber
Blow-off or overflow
Bridge or culvert
Canal
Conduit
Crossing, special construction for railway, highway, creek, river and bridge
Electrolysis control equipment
Gate
Gatehouse
Gauge or recorder
Main, any two or more continuous standard lengths of pipe, including fittings
Manhole
Meter
Meter house
Pressure regulator
Surge tank
Tunnel
Valve
Valve vault
Ill. Admin. Code tit. 83, § 605.309