Sanitary sewer

Sanitary sewer or foul sewer is an underground carriage system specifically for transporting sewage from houses and commercial buildings through pipes to treatment facilities or disposal. Sanitary sewers are part of an overall system called a sewage system or sewerage.

Design and terminology

The sewage is kept in the sealed system to prevent contamination of the surrounding environment. This is achieved through the use of manholes, which are vertical access points that allow for maintenance and inspection of the sewer. The sewage is then transported to a sewage treatment plant.

Combined sewers

Combined sewers are designed to transport stormwater and sewage in the same pipe. This type of sewer system can cause serious contamination issues during heavy rain, when the volume of water exceeds the capacity of the sewer system and causes a combined sewer overflow.

Separate sanitary sewer systems

Separate sanitary sewer systems are designed to transport sewage alone. In these systems, stormwater is usually carried in separate storm sewers, and is discharged directly to surface waters.

Maintenance

Maintenance of sanitary sewers is typically the responsibility of the owner of the property connected to the sewer. Regular maintenance may include cleaning and jetting of the lines, as well as repair or replacement of broken or leaking pipes.

Health and environmental concerns

Sanitary sewers can pose serious health and environmental concerns when they fail. Sewage leaks can contaminate ground and surface water, and can also result in the spread of disease.

See also

• Sewerage
• Combined sewer
• Storm drain
• Sewage treatment

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  Sanitary sewer
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  Working underground
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  Schematic of the Conventional Gravity Sewer
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  Sewer cover
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  Manhole
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  Orifice
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  Kanalizační přípojka, směr dům
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  Kanalizační přípojka, rekonstrukce