Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Object Groupings and Systems (hierarchy name)
4. systems (equipment)
5. [systems by function]

Narrower term/s

• [plumbing and stormwater system components] [NP][+]
  • leader heads
  • catch basins
  • cesspools
  • cisterns (plumbing components)
  • drains [+]
    • area drains
    • fixture drains
    • storm drains
    • French drains
  • gutters (building drainage components) [+]
    • arris gutters
    • valley gutters
    • back gutters
    • eaves gutters
  • piping (plumbing system components) [+]
    • downspouts
    • drainage piping
    • DWV piping
    • mains (plumbing)
    • stacks (piping) [+]
      • soil stacks
      • vent stacks
      • waste stacks
    • risers (piping)
    • service pipes
    • pipe fittings (components)
  • plumbing fixtures [+]
    • drinking fountains
    • washfountains
    • bathtubs [+]
      • sitz baths
      • shower baths
      • hideaway bathtubs
    • bidets (plumbing fixtures)
    • sinks (fixtures) [+]
      • lavatories (sinks)
      • wash sinks
      • slop sinks
      • dry sinks [NP] [+]
      • lavaboes (sinks)
    • toilets (fixtures) [+]
      • chemical toilets
    • urinals (plumbing fixtures)
    • laundry trays
    • water conditioners
    • shower heads
    • bath basins
  • seepage pits
  • septic tanks
  • sumps
  • traps (plumbing system components) [+]
    • fixture traps
    • house traps
  • water heaters [+]
    • solar water heaters
  • water storage tanks
  • leaching fields
  • impluvia
  • waterspouts [+]
    • gargoyles
    • lion-head spouts
    • śuṇḍu
  • safes (plumbing components)
  • rain barrels
  • [temporary alphabetical list: plumbing and stormwater system components] [+]
    • bathroom sinks
    • drain covers
    • indoor fountains
    • kitchen sinks
    • pedestal sinks
    • plumbing & drainage elements
    • plumbing pipes
    • plumbing pumps
    • sink sprayers
    • sink stoppers
    • water heater stands
    • water supply pipes
  • nāla
• water distribution systems[+]
  • downfeed systems
  • upfeed systems
• sanitary drainage systems

Anotations

Scope note:

The systems within a building that supply water to the occupants and carry off liquid or liquid-suspended wastes; includes pipes, traps, vents, and fixtures, but not sources or destinations outside the building such as wells or septic tanks.