Biological oxygen demand BOD₅	mg/dm³	7.2	6.9	7.1	5.8	5.8	5.7	3.9	4.2	4.5	-	5	7	25	> 25
Chemical oxygen demand	mg/dm³	17.3	16.5	17.2	12.8	13.7	12.6	5.9	5.5	5.7	5	10	20	50	>50
Hardness of water	⁰dH	198	189	170	201	203	199	175	178	175
Nitrates	mg/dm³	1.2	0.8	0.65	0.39	0.47	0.34	0.02	0.02	0.02	0.01	0.03	0.12	0.3	>0.3
Phosphates	mg/dm³	0.1	0.07	0.06	0.1	0.08	0.05	0.03	0.03	0.02	-	0.1	0.2	0.5	>0.5
Sulfates	mg/dm³	95.50	94.66	88.45	81.74	76.63	75.41	43.72	56.80	59.67	50	100	200	300	>300
Chloride	mg/dm³	18.4	18.3	18.1	18.3	18.7	18.1	10.3	10.5	10.1	50	100	150	250	>250
Chrome	μg/dm³	0.09	2.58	2.76	0.28	0.27	2.61	0.05	< 0.05	0.05	25	50	100	250	>250
Nickel	μg/dm³	1.8	6.59	3.12	0.10	0.09	3.28	0.18	0.16	0.17	20	25	50	100	>100
Lead	μg/dm³	193.22	148.31	132.15	54.68	39.90	27.62	12.97	18.85	13.81	50	100	100	200	>200
Cadmium	μg/dm³	5.0	17.68	0.10	0.06	0.06	13.12	0.06	0.05	0.05	5 and <	30 and <	100 <	200	>200
Zink	μg/dm³	3.24	7.24	3.21	0.06	< 0.05	0.81	0.08	0.09	0.10	10	100	200	500	1000
Mercury	μg/dm³	0.01	0.35	0.43	0.03	0.02	0.37	5.98	4.99	5.48	5	5	<10	10	>10
Iron	μg/dm³	94	75	80	74	75	56	47	40	38	100	200	500	1000	2000
Copper	μg/dm³	112	124	310	85	57	65	18	22	19	10	100	200	500	1000
Calcium	mg/dm³	64.7	67.6	65.8	85.6	70.7	69.2	60.5	57.3	67.4	-	-	-	-	-
Magnesium	mg/dm³	17.4	19.2	18.7	26.5	21.4	20.8	14.1	18.4	11.9	-	-	-	-	-
Phenols	mg/dm³	0.008	0.006	0.004	0.006	0.005	0.004	0.002	0.001	0.002	0.001	0.001	/	/	/