| Acronym | Meaning |
| IWOP | Integration Within (an Ordered Product Of) Operators |
| MARS | Membrane Anaerobic Reactor System |
| LT1ESWTR | Long Term 1 Enhanced Surface Water Treatment Rule |
| PLO | Partially Localized Orbital |
| EERU | Environmental Emergency Response Unit |
| ARM | Agricultural Runoff Model |
| DEM | Digital Elevation Model |
| FEBD | Fluid Extraction Biological Degradation Process For Organic Wastes |
| ISDN | Integrated Services Digital Network |
| TIRM | Total Internal Reflection Microscopy |