Did you receive a backflow notice or violation from the DEP? Contact us today.

Backflow Device Inspections

Did you receive a backflow notice or violation from the DEP?

Most property managers don't think about backflow prevention devices until a notice shows up in the mail. Between tenant complaints, daily repairs, lease renewals, and bills, you don't have time to become a part-time plumbing compliance expert.


That’s where JTG comes in. We handle the coordination, testing, and paperwork tracking so you can clear the issue with fewer surprises and zero back-and-forth.

When do you need backflow testing?

You’ll generally hear from the City—or need our help—in a few specific scenarios:



  • You received an official DEP backflow notice or violation.
  • Your building's annual backflow test is due.
  • A previous test failed and you need to document the corrective repairs.
  • You are trying to clear an open compliance issue before a sale or refinance.
  • You received a notice but aren't entirely sure what it's asking you to do.

What Is a Backflow Inspection?

The City requires annual testing on your building’s backflow prevention device to ensure contaminated water isn't flowing backward into the clean city supply.


The process requires a certified professional to test the device, fill out specific city forms, and submit the proof. If it passes, you're good for the year. If it fails, it needs to be repaired or replaced before the violation can be cleared.



In short: someone needs to test the hardware, file the right paperwork, and get the City off your back. We manage that entire loop for you.


Who Is Required To Have A Backflow Device?

In New York City, the installation of a backflow prevention device is mandated by the New York City Department of Environmental Protection (NYC DEP). The requirements are designed to protect the public water supply from potential contamination. Here's a brief overview of who in NYC is required to have a backflow device:


  1. Commercial Properties: Most commercial buildings are required to have backflow preventers, especially if they have equipment like boilers, cooling towers, or chemical feed systems.
  2. Multi-family Residential Buildings: Especially those with a boiler that uses water treatment chemicals or those that have a water-cooled air conditioning system.
  3. Properties with Irrigation Systems: Lawns or garden irrigation systems can allow fertilizers or pesticides to enter the water supply if not protected by backflow devices.
  4. Properties with Fire Sprinkler Systems: Depending on the type of system and the chemicals used, these can necessitate backflow devices.
  5. Properties with Pools or Fountains: The chemicals used in pools and fountains can contaminate the potable water supply if a backflow occurs.
  6. Buildings with Certain Types of Medical or Dental Equipment: Equipment that connects to the water supply can introduce contaminants.
  7. Industrial Properties: Especially those that use or produce chemicals, contaminants, or pollutants.
  8. Other Specific Hazards: As determined by the NYC DEP. The DEP will review water usage, internal plumbing, and other factors to determine if a property poses a potential risk to the public water supply.


If the NYC DEP determines that a building needs a backflow prevention device, the property owner will receive a notice and will be required to have one installed and then regularly tested. For a more detailed list, please refer to the NYC website.


Backflow Inspection Frequently Asked Questions

  • Why does NYC mandate having a backflow device?

    New York City mandates the use of backflow prevention devices to safeguard the city's public water supply. Here are the primary reasons for this mandate:


    Protect Public Health: The primary reason is to ensure that contaminants do not enter the public drinking water system. Without adequate backflow prevention, pollutants or contaminants from a building's internal plumbing system can flow backward into the public water supply.


    Avoid Contamination Events: Certain conditions, such as a significant drop in water pressure due to a main break or firefighting activities, can cause water to flow backward (backflow). In situations where buildings utilize chemicals or other non-potable sources, there's a risk these could enter the drinking water without backflow prevention.


    Diverse Usage of Water: NYC is home to a vast array of businesses, industries, and residences, each with unique water usage patterns. Some establishments, like factories, medical facilities, or commercial complexes, use water in ways that can introduce contaminants. Backflow devices ensure that these contaminants don't reverse into the city's water.


    Past Incidents: Like many cities, NYC has learned from past experiences. Incidents in various places over the years have highlighted the dangers of not having backflow preventers, leading to stricter regulations.


    Alignment with Best Practices: Mandating backflow devices aligns NYC with best practices and standards set by water industry professionals and health experts. Many cities across the U.S. have similar requirements to protect their residents.


    Legal and Regulatory Compliance: By mandating these devices, NYC ensures that it remains compliant with state and federal water quality standards and regulations.


    In summary, the mandate is a proactive measure designed to prevent potential health hazards and ensure the consistent safety and quality of New York City's drinking water.

  • How often do I need to have this inspected?

    Upon installation and every 12 months afterwards.

  • Who can perform the inspection/testing?

    Inspection must be completed by a state certified backflow prevention device tester.

  • What if I don't comply?

    Non-compliance can result in penalties and you risk having your water service disconnected.

  • Can I file for an exemption for this backflow requirement?

    Exemptions must be filed by a Professional Engineer (PE) or Registered Architect (RA) on behalf of the property owner. The PE or RA will need to provide all required information in a typed letter on their letterhead and fully state that all necessary exemption conditions have been met. All letters must be sent to DEP for approval.