104.6 km from the confluence, or what is the water quality of Slapy Reservoir?

In recent decades, there has been a significant improvement in the surface water quality of the main streams of the Czech Republic, mainly because of the decrease of heavy industry and due to the construction of wastewater treatment plants in municipalities over 2000 inhabitants. However, the surface water quality of small rivers is still very low, because they are often found in agricultural areas, which are still affected by fertilizers and other pollutants and many of them also do not yet have wastewater treatment plants. One of these is the Mastník stream in the Central Bohemian Region, which flows into the Vltava River’s Slapy Reservoir. Luboš Mrkva and Bohumír Janský from the Department of Physical Geography and Geoecology at our Faculty have focused on the development and current state of the water quality of this important water body.