Parameter | Unité | Rang | Référence | Water class | N˚ of sample |
| % of sample |
|
Electrical conductivity | µs/cm |
| Raghunath, 1987 |
| groundwater | Surface water | groundwater | Surface water |
<250 | Excellent | 7 | 4 | 47% | 100% | |||
250 - 750 | good | 5 |
| 33% |
| |||
750 - 2000 | permissible | 3 |
| 20% |
| |||
2000 - 3000 | doubtful |
|
|
|
| |||
<3000 | unsuitable |
|
|
|
| |||
Sodium adsorption ratio (SAR) | meq/L | 0 - 10 | Todd, 1980 | Excellent | 15 | 4 | 100% | 100% |
10 - 18 | good |
|
|
|
| |||
18 - 26 | doubtful |
|
|
|
| |||
>26 | unsuitable |
|
|
|
| |||
Residuel sodium carbonate (RSC) | meq/L | <1.25 | Lloyd et Heathcote, 1985 | good | 15 | 4 | 100% | 100% |
1.25 - 2.5 | doubtful |
|
|
|
| |||
>2.5 | unfit |
|
|
|
| |||
Percentage of sodium | meq/L | <20 | Kawo et Karuppannan, 2018 | Excellent | 2 | 1 | 33% | 25% |
20 - 40 | good | 9 | 3 | 60% | 75% | |||
40 - 60 | permissible | 2 |
| 33% |
| |||
60 - 80 | doubtful | 2 |
| 33% |
| |||
>80 | unfit | 0 |
|
|
| |||
Kelly Ratio | meq/L | <1 | Kelly, 1963 | suitable | 12 | 4 | 80% | 100% |
>1 | unsuitable | 3 | 0 | 20% | 0% | |||
Magnesium hazard | meq/L | <50 | Raghumath 1987 | suitable | 11 | 1 | 73% | 25% |
>50 | unsuitable | 4 | 3 | 27% | 75% | |||
Permeability index | meq/L | >75 | Oga et al. 2015 | Class-I | 8 | 3 | 53% | 75% |
25 - 75 | Class-II | 7 | 1 | 47% | 25% | |||
<25 | Class-III | 0 |
|
|
| |||
Rapport de corrosité | meg/L | <1 | Ryzner, 1944 Raman 1985 | suitable | 12 | 3 | 80% | 20% |
>1 | unsuitable | 3 | 1 | 20% | 25% |