| Acronym | Meaning |
| PWS | Public Water System |
| SS | Suspended Solids |
| ERCIM | European Research Consortium For Informatics And Mathematics |
| HMWMC | Hazardous Materials And Waste Management Consortium |
| SRT | Sludge Or Solids Retention Time |
| ESE MO | Essential-structure-elements Molecular Orbital |
| SIIA | Software & Information Industry Association |
| WEFA | Window Evolving Factor Analysis |
| AETM | Analytical Electron Transmission Microscopy |
| ACD | Allergic Contact Dermatitis |