I called Backflow Specialties & Plumbing LLC because I was required by WSSC to have my backflow prevention device tested. I don’t even use my irrigation system, but it’s still a requirement of the water company. Roy arrived on time, explained that my best solution was to install a hose bib and cap off the the irrigation system, showed me how to do it my self, agreed to submit the forms to WSSC once I sent pictures, an didn’t charge me for the consultation or forms! I am so grateful for his honesty and professional advice. I am recommending him to all my friends and took the time to add him to Unilocal. Backflow Specialties & Plumbing LLC provides services to: Montgomery County, Prince George’s County, Anne Arundel County, Howard County, Baltimore County, Carroll County, Calvert County, St. Mary’s County, Charles County, Queen Anne’s County, Frederick County, Cecil County, Harford County, Allegheny County, Fairfax county, Prince William County, Stafford County, Alexandria, Arlington, and Falls Church areas.