Potomac homes are larger and mostly date from the 1970s, with a median build year of 1977, so many have several bathrooms with valves at different stages of wear. A shower that drips, scalds or runs lukewarm usually needs a cartridge, new stems or a new valve body. Call the number on this page to be connected with a local plumber in Potomac.
Potomac showers, briefly
Around Potomac Village, where Falls Road meets River Road, and out along the side roads, houses range from older farmhouses to the large suburban homes that replaced much of the farmland. The median home here was built in 1977. Most addresses are on WSSC Water, but Montgomery County gives every property a water and sewer category, and some properties are planned for a private well instead of public service. A home on its own well can see sediment or minerals reach the shower valve in ways a public-water home doesn't, so tell the plumber which you have.
What to do now
- If the shower won't shut off, close the main valve. On a well system, you can also switch off the pump at its breaker.
- Try the other bathrooms. If every shower in the house is lukewarm, the water heater is the more likely culprit.
- Look below the bathroom. Check ceilings and walls under an upstairs shower for staining or soft drywall.
- Leave a seized handle alone. Forcing it can snap a stem inside the valve.
- Gather details. Brand, age of the bathroom, and whether the house has a well or public water.
Signs and what they usually mean
| Symptom | Likely cause |
|---|---|
| Dripping head after shutoff | Worn cartridge seals or stem washers |
| Shower never gets fully hot | Limit stop set low, failed cartridge, or a water heater problem |
| Sudden hot or cold bursts | Pressure-balancing spool stuck or missing |
| Reduced flow at one shower only | Debris or scale in the cartridge or valve screens |
| Body sprays or extra heads misbehaving | Worn diverter or volume controls in a custom shower system |
What affects cost
A single cartridge replacement is straightforward. Multi-function showers with thermostatic valves, separate volume controls and body sprays have more parts, and some of those parts are brand specific and need ordering. Costs also depend on access, since stone or large-format tile is slow to open and hard to match, on whether the valve body has to come out, and on permits: WSSC Water Permit Services handles plumbing permits in Montgomery County, and a plumber can tell you whether a valve replacement in your house calls for one. Homes on a well may also need a look at filtration if cartridges keep clogging.
Shower Valve Repair questions in Potomac
My home is on a private well. Can that affect the shower valve?
Is it worth switching to a thermostatic valve?
How can I tell if the valve is leaking behind the wall?
Can I pick out the new handle and trim myself?
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