Sanitary sewer
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[[Image:WaterPipeLarge.JPG|thumb|right|300px|A sewer-pipe being layed by the cities' sewerage company]]
A '''sanitary sewer''' (also called, especially in the UK, a '''foul sewer''') is a type of underground carriage system for transporting [[sewage]] from houses or industry to [[sewage treatment|treatment]] or disposal. In some areas, sanitary sewers are separate [[sewer]] systems specifically for the carrying of domestic and [[industrial wastewater treatment|industrial wastewater]], and are operated separately and independently of [[storm drain]]s, which carry the [[surface runoff|runoff]] of [[stormwater|rain]] and other water which wash into city streets. Sanitary lines generally consist of laterals (services to a particular unit), mains, and [[manhole]]s (or other various forms of traps). The most commonly used sanitary pipe is SDR-35, with smaller sized laterals interconnected within a larger sized main.
==Simplified sewers==
{{see also|Simplified sewerage}}
[[image:Sansewer.jpg|thumb|PVC Sanitary Sewer Installation]]
Simplified sanitary sewers consist of small-diameter pipes (typically 100 mm or about 4 inches), often laid at fairly flat gradients (1 in 200). The investment cost for sanitary sewers can be about half the costs of conventional sewers. However, the requirements for operation and maintenance are usually higher. Simplified sewers are most common in [[Brazil]] and are also used in a number of other developing countries.
==See also==
*[[Combined sewer]]
*[[Sanitary sewer overflow]] (SSO)
*[[Sewage treatment]]
*[[Stormwater]]
*[[Water pollution]]
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{{waste-stub}}
[[Category:Environmental engineering]]
[[Category:Physical infrastructure]]
[[Category:Sewerage]]
[[Category:Water pollution]]
[[cs:Kanalizační přípojka]]
[[es:Colector]]