Running Toilet
Worn flapper or fill valve letting water trickle continuously.
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Toilet Services
Toilet Repair & Replacement in Northern Virginia
Running toilets, clogs, wobbly bowls, and full toilet replacement with modern, water-efficient fixtures — installed clean and leak-free.
Toilet Repair & Replacement
Common toilet problems we fix.
Most toilet issues fall into a handful of categories. Here's what we typically find — and fix — on service calls across Northern Virginia.
Wobbly or Rocking
Failed wax ring, damaged flange, or loose closet bolts.
Frequent Clogs
Weak flush, partial blockage, or a vent line issue.
Leaking at the Base
Failed wax seal allowing water to escape underneath the bowl.
Weak Flush
Aging toilet design or mineral buildup restricting water flow.
Old, High-Water-Use Toilet
Upgrade to a modern 1.28 GPF toilet to cut water waste.
Toilet services we provide.
- Running toilet repair — flapper and fill valve replacement
- Clogged toilet diagnosis and drain clearing
- Wobbly toilet repair — wax ring and flange replacement
- Toilet replacement and new installation
- Water-efficient, low-flow toilet upgrades
- Comfort-height and ADA-compliant toilet installation
- Emergency service for toilets leaking at the base or supply line
Why Mercy's Plumbing
- Running, clogged, and leaking toilet repair
- Wax ring, flange, and flush valve replacement
- Water-efficient toilet installation and upgrades
- Careful removal and reset with no floor or tile damage
- Straightforward pricing before work begins
FAQs
Toilet repair & replacement FAQs.
Why does my toilet keep running?+
A running toilet is almost always caused by a worn flapper or fill valve that isn't sealing properly, letting water continuously trickle into the bowl. It's a quick, affordable repair that also stops wasted water on your bill.
Why is my toilet rocking or wobbling?+
A wobbly toilet usually means the wax ring seal has failed or the flange underneath has been damaged, or the bolts holding the toilet down have loosened. This should be fixed promptly to prevent water damage to the subfloor.
My toilet keeps clogging. What's wrong?+
Frequent clogs can point to an older low-flow toilet with a weak flush, a partial blockage further down the drain line, or a vent issue. We diagnose the actual cause rather than just plunging and moving on.
How much water can a new toilet save?+
Toilets installed before the mid-1990s can use 3.5 to 7 gallons per flush. Modern water-efficient toilets use 1.28 gallons or less per flush while flushing just as effectively, which can meaningfully lower your water bill.
Can you replace a toilet without damaging my bathroom floor or tile?+
Yes. We remove the old toilet carefully, inspect and replace the wax ring and flange as needed, and reset the new toilet cleanly without damaging surrounding tile or flooring.
Is a leaking toilet an emergency?+
A toilet leaking at the base or the supply line can cause water damage quickly. Call or text us and we'll help you get it addressed as soon as possible.
