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The river nitrate concentration in Ukraine in 2000 was at about the same level as is at present, but there was a marked decrease after 2000 and then an increase, peaking in 2009. River phosphate concentrations were lower around 2009 but have increased since then and are currently more than 0.1 mg P/l higher than in 2000. The increase in the concentration of phosphate may indicate a lack of waste water treatment and an increase in the use of phosphate-based detergents. There is some variation in concentration patterns between the different rivers. In the Prut and Dniester rivers, both nitrate and phosphate concentrations have been decreasing.