Ammonium < 0.04 mg N/l	Ammonium 0.04-0.1 mg N/l	Ammonium 0.1-0.2 mg N/l	Ammonium 0.2-0.4 mg N/l	Ammonium >= 0.4 mg N/l	< 0.04	>=0.04, <0.1	>=0.1, <0.2	>=0.2, <0.4	>= 0.4	BOD5 < 1.4 mg O2/l	BOD5 1.4-2.0 mg O2/l	BOD5 2.0-3.0 mg O2/l	BOD5 3.0-4.0 mg O2/l	BOD5 >= 4 mg O2/l	<1.4	>=1.4,<2.0	>=2.0,<3.0	>=3.0,<4.0	>=4
Total (19)	1	2	7	6	3	5	11	37	32	16	0	0	6	7	6	0	0	32	37	32
Dnister basin (11)	0	1	2	5	3	0	9	18	45	27	0	0	2	3	6	0	0	18	27	55
Prut basin (6)	1	1	4	0	0	17	17	67	0	0	0	0	3	3	0	0	0	50	50	0
Black Sea basin (2)	0	0	1	1	0	0	0	50	50	0	0	0	1	1	0	0	0	50	50	0