The paper presents synthetically, in a simple technical language, the main knowledge regarding sewage systems, insisting on the phenomenological side and limiting the use of mathematical apparatus to the strictest necessary.
In this sense, each type of problem is accompanied by examples, significant applications and practical values, with technical recommendations for use, in order to consolidate knowledge.
The paper covers the entire range of sewage systems, with all the problems raised by them: design, execution, operation and maintenance.