| REQUIRED FOR | TDS | pH |
|---|---|---|
| Type I | 280 < TDS < 350 | 6.5 < pH <8.5 |
| Type II | 200 < TDS < 250 | 6.5 < pH <8.5 |
| Type III | 150 < TDS < 200 | 6.5 < pH <8.5 |
| Type IV | 100 <TDS <150 | 6.3 <pH<8.2 |
| Type V | 50 <TDS <100 | 6.5 < pH <8.0 |
| Type VI | 25 <TDS <50 | 6.0 < pH <8.0 |
| Type VII | TDS<10 | 5.8 < pH <6.5 |
| Type VIII | 280 <TDS< 350 | Zero Chlorine |
| Type IX | 280 <TDS< 350 | 8.0 < pH <9.2 |
| Type X | 280 <TDS< 350 | High Chlorine - 1 ppm |
| Type XI | 20 <TDS < 90 | 7.5 < pH <9.5 0.3<Boron<1.0 ppm |
| Type XII | TDS <5 | 5.8 < pH <7.5 |
