Best Backflow Preventers in Houston TX

I sincerely hope no one in Houston finds themselves in need of a plumber at 2:00 a.m. on a Monday morning but we did last night. I randomly searched for a 24-hour plumber on the internet and found Dover Plumbing. They immediately answered and got to my house within an hour (I live all the way up in Kingwood). They were at my house fixing a busted pipe that was gushing from the ceiling into my kitchen from 3 am to 6 am and did a tremendous job at a fair price. I highly recommend this company.