| Constituent | Limits maximum (ppm) |
| TDS | 500 |
| Cl | 250 |
| Mg | 30 |
| Ca | 75 |
| SO4 | 200 |
| NO3 | 10 |
| NO2 | 10 |
| F | 0.1 |
| Fe | 0.1 |
| Mn | 0.05 |
| pH | 7 - 8.5 |