| Parameter | Sample N154A | Uncertainty | Sample N154B | Uncertainty | Unit |
| Electr. conductivity (25 °C) | 173 | 1 | 622 | 2 | µS/cm |
| Total hardness | 0.438 | 0.004 | 2.11 | 0.02 | mmol/L |
| Alkalinity KS 4.3 (as H+) | 0.88 | 0.01 | 4.58 | 0.04 | mmol/L |
| Hydrogen carbonate | 50.5 | 0.2 | 277 | 2 | mg/L |
| Calcium | 12.7 | 0.2 | 63.6 | 0.8 | mg/L |
| Magnesium | 2.95 | 0.03 | 12.8 | 0.1 | mg/L |
| Sodium | 15.1 | 0.1 | 48.8 | 0.5 | mg/L |
| Potassium | 3.18 | 0.02 | 8.11 | 0.06 | mg/L |
| Nitrate (as NO3) | 16.8 | 0.3 | 25.4 | 0.4 | mg/L |
| Nitrite (as NO2) | 0.0403 | 0.0006 | 0.0101 | 0.0005 | mg/L |
| Ammonium (as NH4) | <0.01 | - | 0.0313 | 0.0050 | mg/L |
| Chloride | 10.9 | 0.2 | 24.2 | 0.4 | mg/L |
| Sulphate (as SO4) | 8.81 | 0.11 | 41.1 | 0.5 | mg/L |
| Orthophosphate (as PO4) | 0.086 | 0.001 | <0.009 | - | mg/L |
| Boron | 0.0152 | 0.0010 | 0.0406 | 0.0003 | mg/L |
| DOC (as C) | 1.96 | 0.04 | 7.28 | 0.05 | mg/L |
| Total phosphate (as PO4) | 0.127 | 0.001 | <0.009 | - | mg/L |
| KMnO4-Index (as O2) | 1.48 | 0.14 | 4.57 | 0.13 | mg/L |