# NYC backflow, sprinkler and standpipe testing

> NYC backflow prevention devices must be tested every 12 months by a New York State certified tester. Sprinkler and standpipe systems need tests at least once every five years, conducted before a Fire Department representative. These deadlines run from the last test, not a fixed calendar date.

Source page: https://coderalert0.github.io/nyc-dob-violations-site/backflow-sprinkler-standpipe-testing.html
Checked against city sources on November 4, 2026. Independent app. Not affiliated with or endorsed by the NYC Department of Buildings or the City of New York.

## Test requirements at a glance

| System | How often | Who is involved | Agency |
|---|---|---|---|
| Backflow prevention device | Every 12 months | New York State certified tester | Department of Environmental Protection (DEP) |
| Sprinkler system | At least once every 5 years | Test conducted before a Fire Department representative | FDNY |
| Standpipe system | At least once every 5 years | Hydrostatic pressure test | FDNY |
| Fire department connections | At least once every 5 years | Hydrostatic test | FDNY |

## Backflow prevention devices

After a device is installed and passes its initial test, it must be tested every 12 months by a certified tester. DEP says failing to do the annual test can lead to fines or disconnection of water service.

## Sprinkler and standpipe systems

The NYC Fire Code requires the five-year tests above and says the test report must be kept for at least five years and be available to the Fire Department. Proposals to shorten the interval have been introduced in the City Council, so check whether the rule has changed.

## Frequently asked questions

### How often does a backflow preventer need testing in NYC?

Every 12 months, by a New York State certified tester.

### How often do sprinklers need a five-year test?

At least once every five years, with a Fire Department representative present.

### Do these deadlines fall on a fixed date?

No. They count from the last test, so each building's date is different.

## Sources

- [NYC DEP: Backflow Prevention Devices](https://www.nyc.gov/site/dep/about/cross-connection-controls.page)
- [NYC Fire Code Chapter 9: Fire Protection Systems](https://www.nyc.gov/assets/fdny/downloads/pdf/about/Chapter-09.pdf)