# Backflow testers in DC, United States

Compare backflow testers in DC. Ask your utility which credentials it accepts.

2 backflow testers. Also on the [web page](https://backflowtesters.fyi/us/dc).

## Backflow testers

1. [Complete Building Services](https://backflowtesters.fyi/us/dc/washington/complete-building-services.md), Backflow testing, 4058 Minnesota Ave NE, Washington: Complete Building Services appears on the DC Water register (Registered Backflow Prevention Assembly Service Provider), with an address in Washington, DC.…
2. [W. L. Gary Company, Inc](https://backflowtesters.fyi/us/dc/washington/w-l-gary-company-inc.md), Backflow installation, 225 Vine St NW, Washington: W. L. Gary Company, Inc appears on the DC Water register (Registered Backflow Prevention Assembly Service Provider), with an address in Washington, DC.…

## Cities in DC

- [Washington](https://backflowtesters.fyi/us/dc/washington.md): 2 backflow testers

## Categories in DC

- [Backflow installation](https://backflowtesters.fyi/category/backflow-installation.md)
- [Backflow testing](https://backflowtesters.fyi/category/backflow-testing.md)

## Other states in United States

- [IN](https://backflowtesters.fyi/us/in.md): 37 backflow testers
- [TX](https://backflowtesters.fyi/us/tx.md): 33 backflow testers
- [NC](https://backflowtesters.fyi/us/nc.md): 27 backflow testers
- [IL](https://backflowtesters.fyi/us/il.md): 26 backflow testers
- [OH](https://backflowtesters.fyi/us/oh.md): 24 backflow testers
- [KS](https://backflowtesters.fyi/us/ks.md): 18 backflow testers
- [NY](https://backflowtesters.fyi/us/ny.md): 17 backflow testers
- [OR](https://backflowtesters.fyi/us/or.md): 15 backflow testers
- [MO](https://backflowtesters.fyi/us/mo.md): 11 backflow testers
- [MD](https://backflowtesters.fyi/us/md.md): 10 backflow testers
- [TN](https://backflowtesters.fyi/us/tn.md): 8 backflow testers
- [VA](https://backflowtesters.fyi/us/va.md): 8 backflow testers
- [KY](https://backflowtesters.fyi/us/ky.md): 5 backflow testers
- [UT](https://backflowtesters.fyi/us/ut.md): 4 backflow testers
- [IA](https://backflowtesters.fyi/us/ia.md): 3 backflow testers
- [PA](https://backflowtesters.fyi/us/pa.md): 3 backflow testers
- [MI](https://backflowtesters.fyi/us/mi.md): 2 backflow testers
- [CA](https://backflowtesters.fyi/us/ca.md): 1 backflow tester
- [CO](https://backflowtesters.fyi/us/co.md): 1 backflow tester
- [MA](https://backflowtesters.fyi/us/ma.md): 1 backflow tester
- [MN](https://backflowtesters.fyi/us/mn.md): 1 backflow tester
- [NE](https://backflowtesters.fyi/us/ne.md): 1 backflow tester
- [NH](https://backflowtesters.fyi/us/nh.md): 1 backflow tester
- [WA](https://backflowtesters.fyi/us/wa.md): 1 backflow tester
- [WI](https://backflowtesters.fyi/us/wi.md): 1 backflow tester