The purpose of this study was to assess the groundwater contamination from a sewage sludge landfill. The analysis‎was carried out in 2017 in accordance with the requirements of the national legislation for monitoring landfills‎and priority pollutants. The samples of groundwater from the landfill were taken from 25 observation wells, from‎depths of 45–60 m. The status and dynamics of changes in the landfill groundwater quality were estimated according‎to the data from the groundwater observation wells of the city observation network with regard to the chemical‎composition of groundwater and national standards of groundwater quality. The forecast estimates of a low level of‎pollutants entering groundwater through the soils characterized by low filtration properties were not justified. The‎concentration of heavy metals in groundwater was within the following range: Fe > Mn?> Zn > Al?> Cu > Ni?> Pb >‎Cd?> Hg. The excess concentration of the nitrogen-containing pollutants was observed within the range from 1.5 to‎76 (on average 10 times) above the background value. The organic contamination of landfill groundwater (COD) is‎2–9 times and BOD5 – 1.5–3 times higher than the average background value of groundwater observation wells in‎the city network. The probable cause for the pollutants entry into groundwater is associated with lithogenous and‎exogenous fracturing of the rocks and insufficient efficiency of the existing anti-filtration system of the landfill.