| BMPs | Best Management Practices |
| CESQG | Conditionally Exempt Small Quantity Generator (federal term – means same as SQG in WA state) |
| CPC | Cleaner Production Challenge |
| CWA | Clean Water Act |
| DW | Dangerous Waste |
| HWTR | Hazardous Waste and Toxics Reduction (a program in Ecology) |
| LQG | Large Quantity Generator |
| MQG | Medium Quantity Generator |
| NPDES | National Pollution Discharge Elimination System |
| PBR | Permit by Rule |
| POTW | Publicly Owned Treatment Works |
| RCRA | Resource Conservation and Recovery Act |
| SQG | Small Quantity Generator |
| TA | Technical Assistance |
| TBG | Treatment by Generator |
| TSD | Treatment Storage or Disposal facility |
| WQ | Water Quality (a program in Ecology) |
| WWTU | Wastewater Treatment Unit |