| Parameter | (S-1) | (S-2) |
| Dissolved oxygen | 9.3 mg/l | 10.73 mg/l |
| Free carbondioxide | 6.16 mg/l | 5.28 mg/l |
| Alkalinity | 20 ppm | 50 ppm |
| Nitrite | Nil | Nil |
| Sulphate | Nil | Nil |