Best Backflow Devices in Washington DC

I moved to the area about a year ago and had a drip in my shower the entire time. I called Durance and they scheduled me an appointment at the beginning of the week - everyone else said it would be 2/3 weeks before someone could come out. Adam and Matt arrived early, talked me through everything they did beforehand, went to the hardware store twice, completely replaced my shower hardware, and put the bathroom back together better than they found it. The job in total took 6 hours and they did not stop once.
Quality service is hard to find, and I am fortunate that I do not have to look any further for any home repairs going forward.

He was polite and courteous.

This is my go-to for plumbing and heating in DC. The workers are very familiar with old houses and related issues. Reasonable prices and fast service!

Let's face it. Nobody wants to call a plumber. But if you have to, call this guy. The service was great. He fit me in on the same day, even asking one of his technicians to stay late in doing so. The technician was very nice, professional, and cleaned up after himself. If I need plumbing work in the future I will call again! Maria was very nice on the phone. (I had a clogged drain cleared and a new garbage disposal installed)