Assessment of Shallow Groundwater Purification Processes after the Construction of a Municipal Sewerage Network

In the present study, impact of construction sewerage network (2014) on groundwater quality was studied example a middle-sized settlement in Great Hungarian Plain and changes water were assessed using GIS multivariate statistical analysis. As result pollution that has been going for decades, supply municipality become heavily polluted. period before (2011–2013), clear spatial differences shown degree contamination area settlement: increased direction local flow. Based our results, resulted marked wells. Our studies showed decrease concentrations inorganic pollutants (NH4+, NO2?, NO3?, PO43?). fifth year post-sewerage (2019), difference between wells eliminated. We have observed strong descent (1.5 to 2 m) levels period, reason is clearly due wastewater outflow On this basis, it can be declared purification processes started, but at same time, results show entering environment undergo number transformations remain system long time.