| Abbreviation | Definition |
|---|---|
| SBOO | South Bay Ocean Outfall |
| SCAP | Sustainable Clothing Action Plan |
| SCSWD | Sebastian County Solid Waste District |
| SCSWD | Seminole County Solid Waste Management Department |
| SCSWD | Shawnee County Solid Waste Division |
| SCSWD | Snohomish County Solid Waste Division |
| SCSWD | South Central Solid Waste District |
| SEI | Sustainable Electronics Initiative |
| SELCHP | South East London Combined Heat and Power |
| SGV | Soil Guideline Value |
| SIG | Special Interest Group of CIWM |
| SLF | Secondary Liquid Fuel |
| SMDSA | Sanitary Medical Disposal Services Association |
| SNIFFER | Scotland and Northern Ireland Forum for Environmental Research |
| SNRHW | Stable Non-Reactive Hazardous Wastes |
| SocEnv | Society for the Environment |
| SRF | Secondary Recovered Fuel or Solid or Specified |
| SSMP | Sewer System Management Plan |
| SSWAT | Site Specific Waste Analysis Tool |
| SSWM | Sub-Surface Waste Management |