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| Water Classification | Description |
| G-I | GROUNDWATER CLASS I |
| G-II | GROUNDWATER CLASS II |
| G-III | GROUNDWATER CLASS III |
| G-IV | GROUNDWATER CLASS IV |
| GC | GAS CONDENSATE |
| LC | LEACHATE |
| S | SOIL OR SEDIMENT |
| SW-I | SURFACE WATER CLASS I |
| SW-II | SURFACE WATER CLASS II |
| SW-IIIF | SURFACE WATER (FRESH) CLASS III |
| SW-IIIM | SURFACE WATER (MARINE) CLASS III |
| SW-IV | SURFACE WATER CLASS IV |
| SW-V | SURFACE WATER CLASS V |