Multicriteria Evaluation of Domestic Sewage and Stormwater Management in New Housing Estate with AHP Support

The progression of urbanization means that new housing estates are being built on the city outskirts, not fully equipped with technical infrastructure. This article presents three examples of solutions for managing domestic wastewater and stormwater for a housing estate: when the receiver is a watercourse or ground, and with devices enabling graywater and rainwater recovery. A SWOT analysis was conducted, and optimal variant was selected using AHP (Analytic Hierarchy Process). Typical selection criteria were applied: economic, ecological, and operational, as well as a climatic criterion, taking into account the amount of greenhouse gases emitted into the atmosphere, which is relevant in the era of climate change and related threats but is not taken into account when planning water and sewage management. Attention was paid to the importance of preferences assigned to individual selection criteria, changing their value in subsequent analyses.