EN
Contribution is focused on problem of eutrophication of stagnant water, current situation in specified area and existing legislation in water management in Slovak Republic. It describes consequences of eutrophication, current state of natural swimming pools water quality in Slovakia, comprehensively evaluates summer tourist season, natural swimming pools in 2010 and stresses the need of developing new, economically less demanding and environmentally friendly methods that will be effective in fight against excessive growth of cyanobacteria water blooms.