Poolesville is not on WSSC sewer: the Town of Poolesville runs its own wastewater collection system and treatment plant, and some properties in and around town use private onsite systems instead. The pipe from your house to the Town's connection is a plumbing repair. Call the number on this page to be connected with a local plumber in Poolesville.

Poolesville is a small historic town in western Montgomery County, surrounded by the county's Agricultural Reserve and about 26 miles from downtown Washington. The Town operates its own sewer collection system and an enhanced nutrient removal treatment plant on Beall Street, which also treats sewage from the nearby WSSC service areas of Jonesville and Jerusalem. The county's plan lists Poolesville's sewer as Town and onsite systems, so not every nearby property is connected. The median home was built around 1985, though the historic district holds much older houses where clay or cast iron laterals are more likely.
What to do now
- Stop using water in the house so nothing more flows toward the blockage.
- Check the street. For a sewer backup, water main break or leak on the public side, the Town lists emergency numbers 240-286-3389 and 240-286-3359.
- If only your house is affected, keep everyone away from the overflowing drain.
- If your property is on a private onsite system, mention it when you call.
- Find the cleanout and clear a path to it and to the lowest drains.
- Call the number on this page to reach a plumber who can clear and inspect the line.
Symptoms and likely causes
| Symptom | Likely cause |
|---|---|
| Floor drain overflows during laundry | Main line blocked past that drain |
| Roots pulled out every time the line is cleared | Open joints in an older clay lateral |
| Slow drains through the whole house | Sag or partial collapse in the building sewer |
| Odor outside near the foundation | Cracked pipe or a loose cleanout cap |
| Backup only during heavy rain | Water getting into a damaged line |
Cost factors
- Pipe material, depth and length of the damaged run
- Older historic-district lots with walls, walks and mature trees over the line
- Repair method: point repair, liner or new section
- Permits: the Town Hall (301-428-8927) issues building, zoning and utility construction permits, and WSSC Water is the plumbing inspection agency for Montgomery County; the plumber confirms which apply
- Restoring lawn or hardscape afterward
Because the Town, not WSSC, owns the public sewer here, ask the plumber to confirm where the Town's connection sits on your street before planning any digging.
Sewer Line Repair questions in Poolesville
Should I call the sewer utility or a plumber first?
How do I find out who provides sewer service at my address?
My property isn't on municipal sewer. What can a plumber still help with?
What are sewer lines under older homes here usually made of?
More plumbing services in Poolesville
Sewer Line Repair nearby
Helpful guides
Sources
- Town of Poolesville: Wastewater treatment plant
- Town of Poolesville: Water and sewer
- Town of Poolesville: FAQ
- Town of Poolesville: Permits and applications
- Montgomery County Water and Sewer Plan, Chapter 1 (PDF)
- WSSC Water: Plumbing and fuel gas inspections
- Poolesville housing by year built (city-stats.com)
- Wikipedia: Poolesville, Maryland
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