1. Find and engage a licensed master plumber who will help you comply with DEP’s order to install.
  2. Conduct a site inspection to determine the threat level to the source of potable water (objectionable vs. harmful/dangerous) as well as the plumbing configuration in and around the installation site (including piping, drainage, etc.).
  3. A certified Professional Engineer (P.E.) or a registered architect drafts engineering plans to install a backflow prevention device based on the inspection.
  4. Submit plans along with an application to install a primary backflow preventer (DEP form GEN236) directly to NYC DEP’s cross-connection control unit.
  5. After the application is approved by the DEP, a permit must be obtained from NYC DOB to install the device.
  6. Once the permit is issued, the backflow device must be ordered and installed according to the plans and existing NYC plumbing code. The installer or a NYS certified backflow prevention tester must test the device under pressure without any downstream demand to ensure the device is operating as designed.
  7. E. or R.A. and L.M.P. inspects and approves the installation,  signs and seals the initial test report (DEP form GEN215B) for each backflow device installed.  A NYS certified backflow tester must sign and date the report as well.
  8. Submit the original initial test report to the DEP for approval and to the DOB to close the installation permit.
  9. When the DEP approves the initial test report, they send back a copy of the approved form.This should be saved in a permanent record.
  10. The device is now properly registered with NYC DEP.