Number of sites with phosphate concentration classes	≤ 0.05 mg P/l	0.05-0.1 mg P/l	0.1-0.2 mg P/l	0.2-0.4 mg P/l	> 0.4 mg P/l	≤ 0.05	0.05-0.1	0.1-0.2	0.2-0.4	> 0.4
Desna (6)	0	0	0	3	3	0	0	0	50	50
Dnipro (54)	0	4	7	34	9	0	7	13	63	17
Dnister (19)	1	1	11	6	0	5	5	58	32	0
Pivdenni Bug (20)	0	0	1	6	13	0	0	5	30	65
Prut (7)	0	6	1	0	0	0	86	14	0	0
Sievercki Donets (16)	0	0	0	0	16	0	0	0	0	100
Tisa (9)	4	5	0	0	0	44	56	0	0	0
TOTAL (131)	5	16	20	49	41	4	12	15	37	31