# Backflow testers in Fredrick, MD

Browse backflow testers with an address in Fredrick. Check availability and utility registration.

1 backflow tester. Also on the [web page](https://backflowtesters.fyi/us/md/fredrick).

## Backflow testers

1. [K.G. Johnson, Inc](https://backflowtesters.fyi/us/md/fredrick/k-g-johnson-inc.md), Backflow testing, Fredrick: K.G. Johnson, Inc appears on the DC Water register (Registered Backflow Prevention Assembly Service Provider), with an address in Fredrick, MD. Services named…

## Categories in Fredrick

- [Backflow testing](https://backflowtesters.fyi/us/md/fredrick/category/backflow-testing.md): 1 backflow tester

## Questions

### How many backflow testers are in Fredrick?

Backflow Testers lists 1 backflow testers with an address in Fredrick, MD.