River as an inseparable part of urban structure of many towns satisfies the human needs connected to water. Quality of water is important factor of development of activities and river use. River Nitra belongs to one of the most contaminated rivers of Slovakia in long-term period. Agriculture and industry are the greatest polluters in the river basin. Goal of this paper is an evaluation of selected indicators of river Nitra water quality. The embankment is intensively developing area of the town. Quality of river water partakes in quality of public space, which is the embankment right in the city centre. Categories of water quality were allocated according to selected indicators: oxygen regime (O2, mg.l-1), phosphates (P-PO4-3, mg.l-1), ammoniac nitrogen (N-NH4+mg.l-1), and nitrite (N-NO2- mg.l-1). Samples were taken at two localities in the Nitra town. According to the evaluation, it was confirmed that the river Nitra belongs to the V. class of water quality and III. class of water condition. Contamination on river Nitra persists what can affect the development of its social function of town.