About two-thirds of Derwood's homes were built in the 1980s, so toilet repairs here are mostly about parts that have reached the end of their life: flappers, fill valves, wax seals and shutoff valves. A plumber can usually sort it out in one trip. Call the number on this page to be connected with a local plumber in Derwood.
Derwood homes and toilets
Derwood is an unincorporated community just north of Rockville and southeast of Gaithersburg, near the Shady Grove Metro. Its median home dates to 1985, and only about 15% of units are older than 1980. That puts a lot of toilets, angle stops and supply lines in Mill Creek Towne, Needwood Estates and nearby neighborhoods at roughly the same age, which is why so many tank and seal failures show up together. WSSC Water supplies water and collects sewage; most WSSC sewage from Montgomery County is treated at DC Water's Blue Plains plant. WSSC owns the service line up to the property line, and the homeowner owns it from there into the house.
Steps to take now
- Shut the valve behind the toilet. If it's stiff, don't force it; close the main shutoff instead.
- Press the flapper closed if the bowl is close to overflowing.
- Put down towels and check for water under nearby flooring or on the ceiling below.
- Test the sinks and tub. If several drains are slow, the clog may be in the main line.
- If sewage is surfacing outside or in a floor drain, call WSSC Water at 301-206-4002.
Signs table
| Sign | Usual cause |
|---|---|
| Phantom refills overnight | Flapper or flush valve seat leaking |
| Water trickling into the overflow tube | Fill valve set too high or worn |
| Bowl slow to refill | Clogged fill valve screen or partly closed stop |
| Floor stain or soft spot at the base | Leaking wax seal |
| Handle loose or sticking | Worn handle arm or tangled chain |
Cost factors
- Whether the work stays inside the tank
- Pulling and resetting the toilet on a new seal
- Flange repair and subfloor condition
- Replacing original 1980s valves and supply lines
- Drain clearing past the trapway
- Evening or weekend scheduling
Plumbing permits in Derwood come from WSSC Water Permit Services, and most plumbing work must be done by a plumber registered with WSSC. Basic tank repairs don't usually require one. When you call, mention which bathroom is affected, whether the toilet is original to the house and whether there's a finished basement below, so the plumber can bring the right seal, flange parts and valves on the first trip.
Toilet Repair questions in Derwood
When should I replace the toilet instead of repairing it?
The little valve behind the toilet won't turn or it drips. What now?
Why does the toilet tank drip with condensation in summer?
Can wipes labeled flushable go down the toilet?
More plumbing services in Derwood
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