To confirm the entire device is operating properly, an annual inspection must be performed. Compliance is monitored by the Department of Environmental Protection (DEP). You may have your Registered Architect or Professional Engineer consult NYC Environmental Control Board Risk Assessment Guide to determine whether or not your property requires a backflow prevention device.  

Unless you have received a specific exemption from DEP, the following types of businesses are required to use backflow prevention devices: 

  • Properties with in-ground irrigation sprinklers 
  • Properties with swimming pools 
  • Premises with multiple water service lines 
  • Metal plating, cleaning, processing or fabricating facilities 
  • Photo-processing facilities 
  • Laundries and dry cleaners 
  • Commercial car washes 
  • Greenhouses 
  • Hospitals and Clinics (including veterinary hospitals) 
  • Medical and Dental Offices 
  • Funeral Parlors 
  • Food processing plants and meat/fish packers 
  • Dye Plants 
  • Paper processors 
  • Auto Repair Shops 
  • Breweries 
  • Tanneries 
  • Exterminators 
  • Large residential dwellings with water boilers that use rust-inhibitors or other water treatment chemicals, (“treated water boilers”) 
  • Sewage treatment plants or handling facilities 
  • Premises with roof tanks and elevated storage lines 
  • Canneries 
  • Slaughterhouse/Live Poultry Processing Facilities 
  • Ice Manufacturing Facilities 
  • Printing Facilities 
  • Supermarkets 
  • Premises with large boilers or chemically treated boilers 
  • Warehouses (with toxic chemical storage) 
  • Premises with Commercial or Public Kitchens 
  • Premises with water-cooled equipment or chillers 
  • Premises with Groundwater Wells 
  • Premises that Reuse or Recycle Water 
  • Shipyards and Marinas 
  • Schools and Colleges 
  • Food Preparation Facilities 
  • Nursing Homes 
  • Barber Shops and Beauty Salons 

1.1.1. Scheduling

Once installation and initial testing are finalized, you are required to have your backflow prevention device tested every 12 months by a Licensed Plumber.  

A notification letter in the mail will be issued by the DEP, when your backflow prevention device is due for its annual test.  

The annual inspection should be scheduled no later than 3 months before the end of the year with Licensed Master Plumber (LMP). 

1.1.2. Inspection

The inspection will take approx. 4-5 hours to ensure the proper operation of the pump, valves, backflow device and test the pressure throughout the risers.  

The DEP states that “defects in any device tested shall be repaired within thirty (30) days, and the repair shall be followed by a retest. Retest results shall be submitted to the Department within thirty (30) days of completion of the repair. 

1.1.3. Filing

Once testing is completed, a test report must be filed immediately with DEP within 30 days of the inspection.  Form GEN-215B must be filled out.

For initial and re-certification testing the following sections of the form must be completely filled out:

Part B must be filled out by a Certified Backflow Prevention Device Tester.

Part C must be completed by a Professional Engineer or Registered Architect (PE/RA).

Part D must be completed by a Professional Licensed Master Plumber. For annual re-certification testing only parts A and B are required to be completed.

Within 30 days following the installation and initial test of a backflow device, a completed form with original ink signatures and original ink or impressed seals must be sent to:

Department of Environmental Protection
Division of Permitting & Inspections
Cross Connection Control Unit
59-17 Junction Boulevard, 3rd Fl. Low-Rise Flushing, NY 11373