18.11.2025
The values of the parameters used to monitor the load of rivers with organic substances have decreased significantly since 1996. The observed decrease in organic load corresponds to the increase in the proportion of the population whose wastewater is treated in municipal and joint wastewater treatment plants. The load of rivers with nutrients varies significantly between river basins. The average nitrate values in all river basins of the Danube river basin are higher than in the Soča and Adriatic river basins and above the values of the natural background.