Backflow assemblies must be installed according to Springfield Utility Board (SUB) Water Division installation requirements, which are posted below.
Additional information is included in our Cross-Connection Control Program Full Manual.
After an assembly is installed, please call (541) 726-2396 to request an inspection. Please provide the following information:
• The backflow preventer make, model, size, and serial number.
• Where the backflow preventer is located on the property (i.e. looking from the street, left side of house next to AC).
Residential Installation Requirements
Installation Requirements-Residential Dom-Irrg Service-2in and Smaller RPBA
Reduced Pressure Backflow Assembly (RPBA) 2” and smaller – Above ground installation
Installation Requirements-Residential Fire Service-2in and Smaller DCVA
Reduced Pressure Backflow Assembly (RPBA) 2” and smaller – Above ground installation
Installation Requirements-Residential Fire Service-2in and Smaller RPBA
Double Check Valve Assembly (DCVA) 2” and smaller – Above ground installation
Installation Requirements-Residential Irrigation System-2in and Smaller RPBA
Reduced Pressure Backflow Assembly (RPBA) 2” and smaller – Above ground installation
Commercial Installation Requirements
Installation Requirements-Commercial Dom-Irrg Service-2in and Smaller RPBA
Reduced Pressure Backflow Assembly (RPBA) 2” and smaller – Above ground installation
Installation Requirements-Commercial Dom-Irrg Service-Larger than 2in RPBA
Reduced Pressure Backflow Assembly (RPBA) Larger than 2” – Above ground installation
Installation Requirements-Commercial Fire Service-Larger than 2in DCDA
Double Check Detector Assembly (DCDA) Larger than 2” – Above ground installation
Installation Requirements-Commercial Fire Service-Larger than 2in RPDA
Reduced Pressure Detector Assembly (RPDA) Larger than 2” – Above ground installation
