| Acronym | Meaning |
| FAS | Fatty Alcohol Sulfates (surfactants) |
| PEUF | Polyelectrolyte Enhanced Ultrafiltration |
| IPHAS | The INT/WFC Photometric H-alpha Survey Of The Northern Galactic Plane |
| RIS | Rotational Isomeric State |
| DEBITS | Deposition Of Biogeochemically Important Trace Species |
| SDI | Silt Density Index |
| BATNEEC | Best Available Technology Not Entailing Excessive Cost |
| NBS | Nuclear Backscattering Spectroscopy |
| CFM | Central Field Model |
| CAST | Cyclic Activated Sludge Technol. |