Number of sites with nitrate concentration classes	Nitrate < 0.8 [mg NO3/l]	Nitrate 0.8-2.0[mg NO3/l]	Nitrate 2.0-3.6 [mg NO3/l]	Nitrate 3.6-5.6 [mg NO3/l]	Nitrate >= 5.6 [mg NO3/l]	< 0.8	>=0.8, <2.0	>=2.0, <3.6	>=3.6, <5.6	>= 5.6
Desna (6)	0	6	0	0	0	0	100	0	0	0
Dnipro (54)	11	27	13	1	2	20	50	24	2	4
Dnister (19)	6	2	7	1	3	32	11	37	5	16
Pivdenni Bug (20)	0	7	5	3	5	0	35	25	15	25
Prut (7)	0	1	6	0	0	0	14	86	0	0
Sievercki Donets (16)	0	1	1	0	14	0	6	6	0	88
Tisa (9)	0	1	7	1	0	0	11	78	11	0
TOTAL (131)	17	45	39	6	24	13	34	30	5	18