Table 2.
Hydrogeochemical analysis result and maximum permissible limit as per ESA, 2013.
| Well ID | Ca (mg/l) | Mg (mg/l) | Na (mg/l) | K (mg/l) | Cl (mg/l) | SO4 (mg/l) | NO3 (mg/l) | TA (mg/l) | TH (mg/l) | TDS (mg/l) | pH |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Wtx | 42.0 | 13.0 | 15.8 | 1.9 | 18.0 | 18.4 | 41.4 | 9.5 | 55.0 | 167.8 | 6.8 |
| Whr | 48.0 | 17.0 | 19.5 | 2.4 | 16.0 | 27.3 | 37.4 | 10.0 | 65.0 | 194.5 | 7.1 |
| Wsw | 40.0 | 70.0 | 63.5 | 1.6 | 44.9 | 27.4 | 51.5 | 16.7 | 110.0 | 361.0 | 7.6 |
| Wmt | 42.0 | 66.0 | 68.2 | 1.8 | 52.9 | 25.9 | 40.8 | 16.5 | 108.0 | 354.0 | 7.1 |
| Wkr | 83.0 | 56.0 | 165.0 | 1.7 | 95.8 | 28.2 | 51.8 | 28.4 | 139.0 | 655.0 | 7.6 |
| Wmd | 35.0 | 107.0 | 134.4 | 1.9 | 257.6 | 31.0 | 43.7 | 20.0 | 142.0 | 638.0 | 7.0 |
| Wmg | 36.0 | 164.0 | 142.9 | 1.9 | 244.6 | 30.2 | 53.5 | 22.0 | 200.0 | 659.0 | 7.1 |
| ESA maxpl (mg/l) | 75 | 50 | 200 | 1.5 | 250 | 250 | 50 | 200 | 300 | 1000 | 6.5–8.5 |
Note. TA = total alkalinity, TH = total hardness, and ESA maxpl = Ethiopian Standard Agency maximum permissible limit.