The Town of Haymarket lists Prince William Water for water and sewer and Columbia Gas of Virginia for gas, and plumbing permits come from Prince William County after town zoning approval. Plumber Washington DC Pros is a free referral service rather than a plumbing company. Call the number on this page to be connected with a local plumber in Haymarket.

Plumbing services in Haymarket
The Crossroads at the foot of the Bull Run Mountains
Haymarket, incorporated in 1882 as the second town in Prince William County, is a small historic crossroads known as "The Crossroads" at the base of the Bull Run Mountains. The town had 1,545 residents in the 2020 Census and sits about 34 miles from downtown Washington, where I-66, U.S. 15 and Route 55, the town's main street, come together. Its 1880s core, with St. Paul's Church and the Old Town Hall and School, is surrounded by newer growth, and Silver Lake and James S. Long regional parks and Bull Run Mountain Estates are nearby. The 20169 Haymarket mailing area covers large unincorporated parts of the county outside town limits.
Water and sewer
The town lists Prince William Water, the former Prince William County Service Authority, for water and sewer within town limits. Its West System is supplied by the Potomac River, treated at Fairfax Water's Corbalis plant, and by Lake Manassas, treated by the City of Manassas; the West System lists chlorine as its disinfectant. Customers on Prince William Water's Bull Run Mountain and Evergreen systems are served by public groundwater wells instead. Prince William Water's annual report covers each system. The utility says all distribution lines and service lines it owns are non-lead, and customers remain responsible for any lead in home plumbing. Customer service: (703) 335-7950 on weekdays; emergency dispatch: (703) 335-7990.
Out in the wider 20169 area, water and sewer service varies by address, so check your bills or ask the utility before assuming you're connected to public lines.
Gas is Columbia Gas
Haymarket's gas utility is Columbia Gas of Virginia, not Washington Gas, and the town lists the same emergency number. If you smell gas, go outside first, then call 911 and Columbia Gas of Virginia at 1-800-544-5606.
Permits: town zoning first
Every building permit for property in town, including mechanical, electrical and plumbing permits, is issued by Prince William County's Department of Development Services. Before that, applicants need Zoning Approval from the Town of Haymarket (Town Hall, 703-753-2600). For a water heater change with new gas piping or venting, a new fixture location or a sewer line repair, plan on both steps.
Housing
The median home in town was built around 1997, so many houses are on their original or first replacement water heater, with modern supply piping and finished basements that depend on sump pumps. The historic core has much older buildings where drain lines and supply piping deserve a closer look.
Haymarket versus the District
DC homes are on DC Water and Washington Gas, with permits from the DC Department of Buildings. Haymarket uses Prince William Water, Columbia Gas and a town-then-county permit path. When you call, tell us whether you're inside the town or elsewhere in 20169 and what is going wrong, and you will be connected with an independent plumber who sets price and timing with you.
Common questions in Haymarket
Who do I call if I smell gas in Haymarket?
How do I get a plumbing permit in Haymarket?
Where does Haymarket's water come from?
Is all of the 20169 area on public water and sewer?
Nearby cities and towns
Sources
- Wikipedia: Haymarket, Virginia
- Town of Haymarket: Utility contact information
- Town of Haymarket: Building and zoning permit
- Town of Haymarket: Building department transfer
- Prince William Water: Contact us
- Prince William Water: 2026 water quality reports release
- Prince William Water: Water quality report (PDF)
- Prince William Water: Water quality reports
- Columbia Gas of Virginia
- City-Stats: Haymarket housing
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