The Record Drawings and this O&M manual use several acronyms for process flow stream (and piping) identification. These are defined below, and not repeated in individual chapters. All process and flow stream piping can be identified by the pipe color and pipe labels. The non-submerged metal piping, fittings, and valves are painted to designate the process or flow stream contained.
Process Flow Abbreviations and Pipe Color Code
| Abbreviation | Pipe Description | Color |
| ALP | Air, Low Pressure | Dark Green |
| ALUM | Alum | Yellow |
| BWS | Backwash Supply | Medium Blue |
| BWW | Backwash Waste | Light Brown |
| CS | Chlorine Solution | Yellow |
| CV | Chlorine Vacuum | – |
| D | Drain | Light Gray |
| FE | Filter Effluent | Light Blue |
| FTW | Filter to Waste | Light Brown |
| FW | Finished Water | Dark Blue |
| NPW | Non-potable Water | Aqua |
| POL | Polymer | – |
| PW | Potable Water | Light Blue |
| RW | Raw Water | Olive Green |
| SA | Sample | Same as Process Piping |
| SPD | Sump Pump Discharge | Light Gray |
| TW | Treated Water | Light Brown |
| V | Vent | Gray |
| VAC | Vacuum | – |
| _ _ | ELECTRICAL CONDUIT | Light Gray |