| TSS | Total suspended solids |
| FeCl3 | Ferric chloride hexahydrate |
| TDS | Total dissolved solids |
| COD | Chemical oxygen demand |
| BOD | Biological oxygen demand |
| Ca | Calcium |
| Mg | Magnesium |
| Fe | Iron |
| Cu | Copper |
| KEPA | Kuwait Environmental Public Authority |
| SO4 | Sulfate |
| PACl | Polyaluminum chloride |
| NTU | Nephelometric Turbidity Units |
| Fe(OH)3 | Ferric hydroxide |
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