Gaithersburg's housing is younger than the inner suburbs, with a median build year of 1989, so many basement pumps here are original equipment that has simply run its course. A plumber can tell you whether a float, check valve or motor is the problem and whether repair or replacement makes more sense. Call the number on this page to be connected with a local plumber in Gaithersburg.
The Gaithersburg picture
Gaithersburg went from farm town to a major I-270 suburb, and much of what was built here, from the planned streets of Kentlands to the subdivisions off MD 124, came with full basements. With the median home dating to 1989, pumps installed during construction have often been replaced once or are due. Older houses around Old Town and the MARC station may have pits that were added well after the house was built.
WSSC Water provides water and sewer service in the city. Plumbing permits and inspections come from WSSC Water Permit Services, while the City of Gaithersburg's Planning and Code Administration handles building permits. WSSC's homeowner permit path does not cover below-grade piping deeper than 4 feet, so a new pit with a deep drain line generally belongs with a plumber who can pull the permit.
Repair, replace or upgrade
| Option | When it fits | Keep in mind |
|---|---|---|
| Replace a float switch or check valve | Motor runs strong but cycling or backflow is off | Fast fix if the pump itself is sound |
| New pump of the same size | Motor is noisy, overheating or seized | Good time to replace the check valve too |
| Larger or dual pump | Pit fills faster than one pump can empty it | May need a bigger basin or new discharge |
| Add battery backup | Finished basement or frequent outages | Battery needs periodic replacement |
| Water-powered backup | No room for a battery unit | Ties into drinking water and needs backflow protection |
Signs to watch
- A damp ring on the basement floor around the pit after rain
- The motor grinding, rattling or running hot to the touch
- Water returning to the basin the moment the pump shuts off
- Rust or white crust on the pump housing
- The pump has not run at all through a wet week
Timing and seasons
Spring thaw and heavy summer thunderstorms are when most Gaithersburg pumps get pushed hardest. Test yours before those stretches by pouring water into the pit and watching a full cycle. In winter, check where the discharge exits outside: a line that holds water can freeze, and a pump running against ice can burn out. If you have a lawn irrigation system with a testable backflow assembly, WSSC wants that tested every year as well, so it can be handy to schedule both visits in spring.
Sump Pumps questions in Gaithersburg
Do I need a permit to replace a sump or ejector pump?
How do I test my sump pump?
What does a high-water alarm do?
My basement gets wet but has no sump pit. Can one be added?
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