Table 7.
Classification of water quality in the Paprocany reservoir and the catchment of the Gostynia River, markings of water purity class: blue—class I; green—class II; red—out-of-class water (analyses based on the data provided by the City of Tychy, the Regional Inspectorate of Environmental Protection in Katowice and by authors’ analyses).
| Indicator | Unit | Inflow | Pelagial | Outflow | Potok Żwakowski Stream Mouth to Gostynia | Rów S1 (Ditch S1) | Gostynia River above the Mouth of the Ditch S1 |
|---|---|---|---|---|---|---|---|
| No. according to Figure 5 | 1 | 2 | 3 | 4 | 5 | 6 | |
| Nitrogen N-NH4 | mg L−1 | 0.135 | 0.108 | 0.110 | 0.526 | 0.401 | 0.557 |
| Nitrogen N-NO3 | mg L−1 | <0.01 | <0.01 | <0.01 | 0.042 | 0.310 | 0.070 |
| Nitrogen N-NO2 | mg L−1 | 0.210 | 0.193 | 0.021 | 2.090 | 5.820 | 1.590 |
| Nitrogen Kjeldahl’s | mg L−1 | 0.92 | 1.19 | 1.05 | 3.22 | 6.59 | 2.73 |
| Chlorate | mg L−1 | 79.4 | 70.9 | 65.9 | 29.8 | 4750.7 | 97.9 |
| Phosphate P-PO4 | mg L−1 | <0.01 | <0.01 | 0.021 | 0.022 | 0.315 | 0.030 |
| Magnesium Mg | mg L−1 | 7.18 | 6.86 | 6.69 | 10.63 | 89.58 | 12.23 |
| pH | 6.97 | 7.83 | 7.54 | 8.16 | 8.23 | 7.83 | |
| Conductivity | µS cm−1 | 468 | 430 | 432 | 484 | 12261 | 1162 |
| Sulphate SO4 | mg L−1 | - | - | 72.6 | 322.1 | 337.5 | 308.6 |
| Total Dissolved Solids | mg L−1 | - | - | 304.4 | 330.0 | 8252.0 | 622.0 |
| Calcium Ca | mg L−1 | 40.14 | 37.77 | 37.36 | 66.34 | 146.00 | 85.56 |
| Total Organic Carbon | mg L−1 | 7.83 | 9.22 | 9.06 | 6.63 | 3.69 | 5.34 |