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 |
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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 | / | / | / |