Riverdale Park's median home was built around 1957, so many showers here still have older two-handle valves or early single-lever models. A drip, a stiff handle or a shower that turns hot when a toilet flushes usually comes from worn washers, stems or a cartridge. Call the number on this page to be connected with a local plumber in Riverdale.

Signs it is time for a repair
- The head keeps dripping no matter how firmly the handles are closed
- The shower turns hot or cold when someone uses water elsewhere
- Handles are hard to turn or squeak
- Water seeps out around the handle while the shower runs
- The wall behind the shower feels soft or shows stains
Riverdale homes and water
Riverdale grew as a streetcar suburb along US 1, just south of College Park, and much of its housing comes from the first half of the twentieth century through the post-war years. Bathrooms from those decades often have two-handle valves with rubber washers, and some still have their original supply piping. Many homes have been updated, so a single-lever cartridge valve is also common.
WSSC Water supplies the area and disinfects with chlorine, not chloramine. Its tap analysis shows hardness averaging about 140 mg/L in Potomac plant water and about 64 mg/L in Patuxent plant water, varying by which plant serves an address. Minerals leave a gradual coating on valve parts, which can make old stems and cartridges stiff. Most plumbing work in WSSC territory, including service line repairs, is done under a WSSC permit by a plumber registered with WSSC Water, and building permits are a Prince George's County matter.
Cost factors
- What has worn. Washers, seats and cartridges are inexpensive parts compared with a new valve body.
- Parts supply. Older valves from vanished brands may need replacing outright.
- Wall access. Plaster walls take longer to open and patch than drywall.
- Pipe condition. Corroded older pipe may need to be replaced back to a sound joint.
- Upgrade choice. Adding pressure balancing or thermostatic control costs more but ends temperature swings.
Calling the number
This is a referral line, not a plumbing company. You will be connected with an independent plumber who covers Riverdale. Tell them how old the house is, what the shower does, and whether you see water outside the tub. If the shower cannot be turned off, close the main before calling. A photo of the handles and trim, plus any brand name stamped on them, helps the plumber judge whether parts are still sold before arriving. If there is a closet or panel behind the shower, clear it so the plumber can look at the back of the valve.
Shower Valve Repair questions in Riverdale
Why does my shower turn scalding or icy when someone flushes a toilet?
Will a water softener help a shower valve last longer?
How can I tell if the valve is leaking inside the wall?
Is a new cartridge enough, or does the whole valve need replacing?
More plumbing services in Riverdale
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