It's all about systemic acts of vandalism. Such data was disseminated in the press service of the capital administration (KCSA). According to the data - constant acts of vandalism - when malefactors stain water in fountains with chemicals - they lead to serious financial losses. 
Due to the need for continuous restoration work, as well as cleaning of the fountains and due to the high price of these works - it was decided to fountain "Cascade", which on Maidan, for the time being turned off. 
As reported URA-Inform, in the capital the vandals also painted the Lybid River - the water became bright green.