Plumbers in McLean, VA

Close in, just over Chain Bridge

McLean lies about 9 miles northwest of downtown Washington, an affluent unincorporated community of 50,773 people (2020 Census) that includes Langley, home of CIA headquarters, plus Lewinsville and West McLean. The Capital Beltway, the George Washington Memorial Parkway, Dolley Madison Boulevard and Chain Bridge Road, Georgetown Pike and Old Dominion Drive frame it, and the McLean station puts it on the Silver Line. Because it is not a town, Fairfax County handles permits and sewers.

Houses and the work they need

The median McLean home was built around 1976, but the range is wide: mid-century houses sit near large newer custom homes. Older houses bring aging supply piping, worn valves and original drain lines; larger homes add multiple water heaters, recirculation pumps, finished basements with sump pumps and long irrigation systems. Freezing weather tests hose bibs and pipes along exterior walls each winter.

Water service

Fairfax Water treats Potomac River water at its Corbalis plant and Occoquan Reservoir water at its Griffith plant, and some of its customers receive Potomac water treated by the Washington Aqueduct instead. The disinfectant changes with the season: chloramines normally from July through March and free chlorine generally from April through June. Its finished-water analyses describe moderately hard water that varies by plant and season, near 7.5 grains per gallon on average at Corbalis. Fairfax Water owns the line up to and including the meter, and the owner owns everything after it; its Lead Free Fairfax survey asks owners to report their side's pipe material. Customer service is 703-698-5800, and water emergencies after hours go to 703-698-5613.

Permits and backflow in McLean

Fairfax County Land Development Services requires a permit to replace a water heater and to add, repair or relocate plumbing or gas fixtures; swapping a fixture like for like in the same spot is exempt. Applications go through PLUS, and LDS answers at 703-222-0801. The county's Cross Connections Group works with Fairfax Water on backflow: lawn irrigation systems need a testable high-hazard assembly tested every year by a DPOR-certified Backflow Prevention Device Worker on the county's Authorized Vendor List, and fire sprinklers, in-ground pools, directly connected hot tubs and steam saunas fall under the program too.

Sewer and gas

If sewage backs up while nothing is running, the county says to call its 24-hour line, 703-323-1211, first. If the county main checks out, the lateral from the house to the main is the owner's to maintain, and a plumber can scope and clear it. Washington Gas serves Fairfax County, though some county areas are on Columbia Gas, so check your bill. If you smell gas, leave the house first, then call 911 and Washington Gas at 844-WASHGAS (844-927-4427), option 1.

How McLean differs from the District

A DC home deals with DC Water and the DC Department of Buildings. McLean answers to Fairfax Water and county offices, and its stricter water heater permit rule catches some owners by surprise. When you call, describe the problem and where you are, and you will be connected with an independent plumber who sets price and timing with you.