Haymarket homes are mostly newer, with a median build year of 1997, so hidden leaks usually start at valves, fittings, irrigation and water heater connections. A higher Prince William Water bill or a meter that keeps moving is the common sign. Call the number on this page to be connected with a local plumber in Haymarket.

Who supplies my water?
The Town of Haymarket lists Prince William Water for water and sewer. The utility runs five distribution systems, and which one serves a given 20169 address isn't always obvious: its West System blends Potomac River water treated at Fairfax Water's Corbalis plant with Lake Manassas water treated by the City of Manassas, while Bull Run Mountain and Evergreen customers are on public groundwater wells. The 20169 mailing area also reaches well beyond town limits, so service varies by address. Your bill and Prince William Water's customer service line, (703) 335-7950, can confirm it. Emergency dispatch, staffed at all hours, is (703) 335-7990.
What usually leaks in a Haymarket house?
With most homes built from the late 1990s on, the pipe is rarely the issue. Shutoff valves, braided supply hoses, washer boxes, shower cartridges, water heater connectors and refrigerator lines are the common culprits. Irrigation systems and hose bibbs add outdoor possibilities. Prince William Water states that the lines it owns are non-lead, while plumbing in the house is the owner's. A leak in a newer house often starts small, a seep at a crimp ring or a pinhole in a hose, and spreads quietly through a subfloor or finished basement ceiling before it shows. Catching it early usually means a smaller repair and less drywall work.
How do I check before calling?
Turn off everything that uses water, including the sprinkler controller, and watch the meter. If it moves, shut the main valve inside. Still moving means the buried line to the house; stopped means indoors. Put food coloring in each toilet tank. Then look at the water heater, under sinks and along basement walls for drips, stains or white mineral trails, and write down what you find so the plumber can skip steps you've already covered.
A Haymarket note
Inside town, plumbing permits come from Prince William County Development Services, but only after Town zoning approval from Town Hall (703-753-2600). Homes outside town limits skip the Town step and go straight to the County. Many leak repairs are small enough not to need a permit at all, and the plumber can tell you which applies. If you smell gas while hunting for a leak, stop, leave the house, then call 911 and Columbia Gas of Virginia at 1-800-544-5606 from outside.
Leak Detection questions in Haymarket
How do I know which water utility serves my address?
Can a fairly new house have a hidden leak?
Could the lawn irrigation system be where the water is going?
What if I smell gas instead of finding water?
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