Total Dissolved Solids (TDS) Parts Per Million
| # | Type | ……..TDS…….. | Remarks |
|---|---|---|---|
| 1 | Refresh Distilled Water | 0 (Less than 1) | |
| 2 | Other Distilled | 1 – 5 | |
| 3 | Deionised or Demineralised Water (often wrongly referred to as distilled) | 2 – 8 | Without sterilisation cannot be used for drinking |
| 4 | Reverse Osmosis | 8 – 20 | |
| 5 | Rain Water | 15 – 50 | |
| 6 | Spring Water | 70 – 200 | |
| 7 | Filtered Water | 60 – 400 | Filtration improves the taste but does not remove mineral salts in water |
| 8 | Tap Water | 80 – 600+ | |
| 9 | Bore Water | 1000+ |