|-
| style="text-align: center; vertical-align: middle" |
[[File:Sewerpic.png|thumb|right|100px|link=Design Features]]<br/>
[[Design_Features|Sewers for Buildings]]
|-
| style="text-align: center; vertical-align: middle" |
[[File:Primtreatpic.png|thumb|right|100px|link=Settled Sewers]]<br/>
[[Settled_Sewers|Settled Sewers]]
| Small to moderately-sized communities. Uses smaller pipes and can accommodate variable flows<br/>| Moderate for the sewer pipes<br/>
High when considering the cost of septic or settling tanks at each building.
| Low for the sewers<br/>
High for the septic tanks when considering the required desludging.
| High when community programs for desludging are provided<br/>
|-
| style="text-align: center; vertical-align: middle" | [[File:Consewer.png|thumb|right|100px|link=Technology]]<br/>
[[Technology|Condominial Sewer]]
| Small to medium-sized communities<br/>
| Low - Allows sharing of sewer laterals, which reduces cost<br/>
|-
| style="text-align: center; vertical-align: middle" |
[[File:Combined wet.jpg|thumb|right|100px|link=Combined Sewers]]<br/>
[[Combined_Sewers|Combined Sewers]]
| Larger communities<br/>
| Moderate – groundwater, poor soils and variable slopes increase costs<br/>
|-
| style="text-align: center; vertical-align: middle" |
[[File:Pressure.png|thumb|right|100px|link=Technology]]<br/>
[[Technology|Pressure Sewer Pumps]]
| When variable slopes or distances will not allow gravity systems<br/>
| High - Pump tanks, pump equipment, and the cost of electricity adds to cost<br/>
|}
''[[Practitioner's Tool / Technologyand Operation|Back to Technology Page]and Operation]''
