Because of poor maintenance of drainage infrastructure, waterlogging of agricultural land is a concern. In the Ukrainian section of the Prut in 2008-2009, BOD, nitrite, and suspended solids were the most common defects. Compared to 2005, there was a slight improvement of the water quality of the Prut River in the Republic of Moldova. In 2005, four monitoring stations of the seven fell in class III and three stations in class II. In 2008, all seven stations fell in class II. In Romanian territory, on the Prut River, there are 11 monitoring stations.