The issues of autonomous water supply at home, water purification, construction of water supply networks and sewerage have already been touched upon by the publishing house in the book by V. S. Samoilov "Engineering support for the house and site." This was the subject of two sections of the book. However, the variety of problems that arise in the practical solution of all issues related to water supply requires more in-depth knowledge, which will allow you to avoid many mistakes, minimize unnecessary labor costs, and, as a result, optimize financial costs.This book S. Samoilova, written in creative collaboration with V. S. Levadny, in addition to professional answers, will also prompt proven solutions that will contribute to the implementation of the tasks.