- See also: sewage
Sewerage refers to the infrastructure that conveys sewage. It encompasses components such as receiving drains, manholes, pumping stations, storm overflows, and screening chambers of the sanitary sewer. Sewerage ends at the entry to a sewage treatment plant or at the point of discharge into the environment. In loose American English usage, the terms "sewerage" and "sewage" are sometimes used interchangeably.
Implementation and usefulness 
In many European countries, citizens are obliged to connect their home sanitation to the national sewerage system where possible. This has resulted in large percentages of the population being connected to a sewerage system. For example, the Netherlands have 99% of the population connected to the sewerage system, and 1% has an individual sewage disposal system, e.g., septic tank. Others have slightly lower (though still substantial) percentages; e.g., 96% for Germany and 86% for Belgium.
See also 
- Combined sewer
- Effluent sewer
- Sanitary sewer
- Sanitary sewer overflow (SSO)
- Sewage collection and disposal
- Simplified sewerage
- Storm drain
- Funk & Wagnall's Standard Dictionary (International Edition) New York, 1960, p. 1152
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