New York City Backflow Prevention & Testing

Did You Receive a Backflow Violation?
Relax! Maxwell Plumb Will Take Care of EVERYTHING.

If you have received an order from the Department of Environmental Protection (DEP) informing you that your premises are in need of backflow prevention devices, you may be wondering what you should do. 

Make one easy call to Maxwell Plumb Mechanical and your backflow problems are over. Our backflow team will take care of everything! We will immediately contact all proper authorities, fix any violations and work with you to determine your exact backflow needs, create a plan and submit the plan for approval. 

Upon approval our licensed master plumbers will properly install your backflow prevention device to all codes and city regulations, arrange for all inspections and perform all required annual testing.

It’s That Easy with Maxwell Plumb!

We handle everything for you and that’s the reason why Maxwell Plumb has been New York City’s leading authority on Backflow Prevention Systems for over 22 years.  Our team of designers, engineers, technicians, and licensed master plumbers are backflow professionals with decades of experience. 

We meet and exceed backflow industry standards. We will handle everything from design and engineering to plan approval, installation, repairs, and annual testing. 

Here’s What Maxwell Plumb Will Do For You:

  • On-site evaluation and analysis to determine your best backflow solution
  • Our engineers will design a backflow system that is in absolute compliance with DEP regulations – saving you costly violations or loss of business
  • Delivery of design plans to the DEP for approval
  • We are available for emergency plumbing repairs
  • Our licensed Master Plumbers will professionally install your backflow system to our stringent specifications
  • We will arrange for all inspections
  • We perform the required annual testing
  • We make backflow prevention easy for you

Maxwell Plumb exceeds commercial plumbing industry standards. We will handle everything from design and engineering to plan approval, installation, service, repairs, and annual testing.

Schedule reliable & lasting backflow preventer installation in New York City by calling (718) 509-6398 or by contacting us online today!


A Commitment to Excellence

A plumber fixing pipes
  • Commercial & Residential

    The Maxwell Plumb team is prepared to meet a range of residential & commercial needs. 

  • Proactive Solutions

    We believe in the value of proactive rather than reactive work to keep you protected! 

  • 30+ Years of Experience

    We bring decades of experience to New York City homes & businesses.

New York City Backflow Compliance Rules & Regulations

To protect New York City’s water supply many businesses are legally mandated to install and maintain approved backflow preventers to avoid contaminated water or chemicals from flowing back into the public drinking water system. If you do not meet the new requirements you are subject to a costly violation of up to $2,000 and possible loss of business.

Device Installation & Inspection Procedure

The DEP has established the following criteria to install, operate and maintain a proper backflow prevention device:

  • First, you must hire a Professional Engineer (PE) or Registered Architect (RA) to prepare two sets of backflow prevention plans for your property. These must be submitted with two application forms to DEP’s Cross-Connect Control Unit for approval. If approved, the DEP will notify you via mail and return a copy of the plans to your PE or RA.
  • Your backflow prevention device in New York City must then be installed in accordance with the DEP-approved plans. Installation must comply with NYC Department of Buildings's regulations and requirements.
  • Once installed, the device must be tested by a New York Certified Backflow Prevention Device Tester.
  • Once testing is completed, a test report must be filed immediately with DEP (within 30 days of device installation). In the event of an improper installation, DEP will notify you or your PE/RA. The device will need to be fixed and then resubmitted for inspection and certification.
  • Your backflow prevention device must be properly maintained and will be subject to annual testing and inspection by a certified tester.

Signs Your Backflow Preventer Needs Repair

It's important to be aware of the signs that your backflow preventer may need repair. One of the key indicators is uneven water pressure or extreme fluctuation coming from different taps in the house; this could signify a defect in the backflow preventer. Additionally, uneven water pressure could indicate a leak. 

Other symptoms can include cloudy or discolored water and slow drainage, which is indicative of an issue with your drainage system as well as your backflow prevention device. If you notice any of these issues, it's important to contact us to inspect and check for potential repairs or replacements needed—after all, it's better to be safe than sorry when it comes to your pipes and fixtures!

Benefits of Backflow Prevention Devices

Backflow and back-siphonage devices are designed to keep contaminated wastewater and sewage in their proper place and away from areas where they could cause sickness or harm.  For example, produce washing sinks are required to have an air gap in their drain line.  This “break” in the line keeps a sewer backup from contaminating the sink by allowing the backup to flow out of the air gap onto the floor instead of up the drain pipe and into the sink. 

Without backflow prevention in New York City, a sewer backup in the middle of the night might go unnoticed and the next day a restaurant could be washing produce in raw sewage, right inside their produce washing sink.  These devices are also used to keep any contamination from the restaurant out of the clean water supply. 

Do not delay in calling Maxwell Plumb. If the device is not installed as ordered, a violation of up to $2,000 can be issued.

New York City Backflow FAQ

How Often is Backflow Testing Required?

Backflow prevention devices in New York City require testing to monitor the performance of the device. This testing must be done at least once annually to effectively provide backflow prevention from pollution and contamination. It is important that backflow preventer assemblies are tested and maintained, as malfunctioning backflow preventers can lead to potentially hazardous cross-contamination of a drinking water supply. 

The backflow testing process involves examining the backflow preventer for any issues, verification that it is correctly installed, inspecting for any physical damages and verifying its operation under normal operating conditions. By having backflow testing performed at least once a year, property owners can ensure their backflow preventer is functioning correctly and meets all necessary safety and performance standards.

What Types of Properties are Required to Install a Backflow Prevention Device?

Unless they receive a specific exemption from DEP, the following types of businesses are required to use backflow preventers:

  • Metal plating, cleaning, processing or fabricating facilities
  • Photo-processing facilities
  • Laundries and dry cleaners
  • Commercial car washes
  • Greenhouses
  • Hospitals, clinics and laboratories (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 multiple water service lines  
  • 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 & beauty salons
  • Properties with in-ground irrigation sprinklers

Request prompt backflow preventer installation, repair, inspection or testing in New York City. Call (718) 509-6398 today! 

“It was an emergency. My building management got in contact with these guys and they totally came through.”

Jean-Paul N.

Ready To Get Started? Contact Our Team Today!

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