Based on the findings of the high groundwater level – backed up by IG surveys in May 2015, a change in the design of the deep storage of gravitational sewer stalls was made conditional on them reaching below the groundwater level to the minimum extent possible. The project documentation complied with 90 % of the originally designed sewer stalls, with reworking of the flow – according to the natural slope of the terrain, taking into account documented groundwater levels in established probes within the village Topoľníky. The project documentation addresses on a whole-municipal scale – drainage of sewage by a system of gravitational sewer stalls – in combination with the proposal to install 19 pcs of newly designed pumping sewer stations, including discharge pipes to the nearest sewer shafts – including connections of IBV to the municipal sewerage system. The building will be used to dissipate sewage from the municipality’s interest area – from real estate on a municipal scale – to the built wastewater treatment plant in Topoľníky. The building is an ecologically important building.