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| style="text-align: center; vertical-align: middle" |
[[File:Sewerpic.png|100px|link=Sewers for Buildings - Design Features]]<br/>
[[Design_FeaturesPractitioner's Tool / Sewers for Buildings|Sewers for Buildings - Design Features]]
| To transport wastewater from buildings to the treatment system<br/>
| style="text-align: center; vertical-align: middle" |
[[File:Primtreatpic.png|100px|link=Settled Sewers]]<br/>
[[Settled_SewersPractitioner's Tool / Settled Sewers|Settled Sewers]]
|Small to moderately-sized communities. Uses smaller pipes and can accommodate variable flows<br/>
| Moderate for the sewer pipes<br/>
| style="text-align: center; vertical-align: middle" |
[[File:Combined wet.jpg|100px|link=Combined Sewers]]<br/>
[[Combined_SewersPractitioner's Tool / Combined Sewers|Combined Sewers]]
| Larger communities<br/>
| Moderate – groundwater, poor soils and variable slopes increase costs<br/>
