For a Gainesville plumbing emergency, close the main water valve, and if there's a gas smell, get outside before calling 911 and your gas utility. Then call the number on this page to be connected with a local plumber in Gainesville.

Local conditions
Gainesville grew from a railroad and farm crossroads at Interstate 66 and Route 29 into one of the newest suburbs in western Prince William County. Only about 4 percent of homes in ZIP 20155 were built before 1980, and the 2000s were the busiest building decade. In neighborhoods off Route 29 and around The Settlement, emergencies usually involve failed water heaters, burst supply hoses, sump pumps and clogged main drains rather than corroded old pipe.
Prince William Water provides water and sewer. Its emergency dispatch line, 703-335-7990, handles main breaks and outages, and customer service is 703-335-7950 on weekdays. The utility owns the meter; lines and connections on private property are the owner's responsibility. Wastewater from western Prince William County is treated at the Upper Occoquan Service Authority plant. Prince William Water rates its water moderately hard, about 3.5 to 7 grains per gallon.
Columbia Gas of Virginia and Washington Gas both operate in Prince William County, so check your gas bill to see which serves your home.
Utility or plumber?
| What's happening | Who handles it |
|---|---|
| Water flowing in the street or from the meter box | Prince William Water dispatch |
| Leak between the meter and the house | A plumber, since private-property lines are the owner's |
| Sewage backing up only in your house | A plumber |
| Sewage overflowing from a manhole or affecting the street | Prince William Water dispatch |
| Gas odor | Leave, then 911 and the gas utility on your bill |
Signs to watch for
- Water spreading across a finished basement floor
- The water heater leaking or making loud popping noises followed by a leak
- Several drains backing up at the same time
- A sudden pressure drop with a hiss behind a wall
- The meter dial turning while every faucet and appliance is off
A dripping faucet or one slow drain can wait for a weekday. Anything that keeps soaking flooring or drywall should not.
Seasonal notes
Winter freezes catch pipes in garages and exterior walls, and heavy summer storms push water toward basements, which is when sump pumps fail. Prince William County Development Services issues plumbing and gas permits for Gainesville if the repair becomes a replacement. Calls at night or on weekends usually cost more, and no arrival time is promised.
Emergency Plumber questions in Gainesville
The leak is between the water meter and the house. Whose job is that?
The basement is taking on water during a storm. Is that a plumbing emergency?
We heat with propane. What changes in a gas emergency?
Which plumbing problems can safely wait for a weekday?
More plumbing services in Gainesville
Emergency Plumber nearby
Helpful guides
Sources
- Prince William Water: Sustainability Commission presentation
- Prince William Water: residential customer FAQ
- Prince William Water: water hardness
- Prince William County hazard mitigation annex (utilities)
- Prince William County Development Services: areas we serve
- Gainesville ZIP 20155 housing (city-data.com)
- Gainesville, Virginia (Wikipedia)
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