FAQ
Frequently Asked Questions
Properties are categorized by the level of hazard it poses to the city’s potable drinking water. For example: hospitals, doctors’ offices, manufacturing or any facility that uses chemicals regularly, or properties with a fire sprinkler system which may also contain a chemical mix. These properties are mandated by the city to install a backflow device. For further details please visit NYC-DEP Cross Connection Control Unit guidelines.
You have come to the right place! Email your NYC-DEP order to sol@depbackflow.com, and one of our specialists will review and contact the city on your behalf. We will send down one of our certified technicians to your property to examine the site to see exactly what’s needed, and what it would take to be in compliance. We will simplify this complex task for you.
In order to be in compliance with the NYC-DEP, a backflow preventer is required to be tested by a certified backflow tester within twelve months of the last testing.


We at DEP Backflow Inc. ensure that our customers stay in compliance with the NYC-DEP requirements. Once we have done a testing for you, we will send you an email or text when the time has come to do your annual test.
Our technicians are highly trained in the field. When we perform an annual test on a backflow device, if the device is not passable, our technician will examine/evaluate the device and see if a minor repair is possible or if extensive repair is necessary, like replacing parts, etc. If it can be done at the time of the test, the device is repaired and then retested free of charge. If further repairs are necessary, we will consult with the customer to schedule a date and time for the repair and we will then retest the device free of charge.