The project will be located in Białobrzegi and Southern Zegra – located in Nieporęt Commune, Legion County, Mazowieckie Voivodeship. The project is implemented in the area of the Serock agglomeration designated by Resolution No 148/14 of the Mazovian Voivodeship Sejm of 28 April 2014 on the designation of the Serock agglomeration. As part of the construction of the sewage system on the settlement in Białobrzeg, a total sanitary sewage system of 1456.00 mb was designed; and a rainwater drainage system, which will be constructed on the same streets as the construction of sanitary sewage system with a total length of 817 mb; the system assumes the construction of 6 sinking tanks, which will be receivers of rainwater. — it is necessary to reconstruct the pavement of roads and pavements, including their adaptation to technological conditions and geodesic sewage networks. As part of the construction of the sewage system on the settlement in Southern Zegrze – a total sanitary sewage system of 862.50 mb was designed; Length of built sanitary sewage system – 4.21 km Number of new users of the sewage network who joined the network as a result of the project – 1639 RLM