The Pilica River (location) is the longest western tributary of the Vistula, the major river of Poland. It has a length of 342 km, and a catchment area of 9,258 km². The river has mostly a natural character, however, the quality of water is impacted by both point-sources of pollution (mostly from the towns of Koniecpol and Przedborz) as well as non-point sources of pollution, resulting from agricultural use of over 60% of the catchment area. Total phosphorus (TP) concentration in the river usually is between 100 and 300 µg l -1. However, in certain hydrological situations it may be as high as 700 µg l -1.
The lowland Sulejow Reservoir is located in the middle course of the Pilica River. Eutrophication resulting from the riverine phosphorus supply, disturbs the ecological balance of the ecosystem and produces cyanobacterial bloomss during summer. They may have cancerous and other toxic effects on humans such as the degradation of liver cells, damage of the nervous system and irritation of the respiratory muscles. For nearly 30 years the main function of the reservoir was the supply of drinking water to the city of Lodz (about 800 000 inhabitants). Due to the deterioration of water quality this function is now restricted. The reservoir still serves as a recreational area, however, the occurrence of toxic blooms may further restrict it's use.
The Demonstration project has been divided into two Demonstration Areas:
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Both areas also demonstrate the application of the EH & PH concepts for sustainable
develop-ment of society.
