The indicator derives from the application of the reference legislation for the determination of the ecological status of surface water within the meaning of Directive 2000/60/EC. From the data transmitted in the SoE WISE2 flow referring to 2023, it is noted that the EQB Fitoplankton was monitored at 151 stations and in 72% of them reached the "good or higher" ecological status. In the remaining 28% of the stations there is a state of lower quality than good.

The indicator derives from the application of the reference legislation for the determination of the ecological status of surface water within the meaning of Directive 2000/60/EC. For 2023, as part of the Soe WISE2 data stream, data on 694 monitoring stations for the EQB Macrobenthos were transmitted, which in 55% of them reached the "good or higher" ecological status. In the remaining 45% of the stations there is a state of lower quality than the good. For the EQB Diatomee in 2023, data from 591 monitoring stations were transmitted: in 74% of them there was a "good or higher" ecological status, the remaining 26% has an ecological status lower than the voucher.