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A running toilet is one of the most common — and most wasteful — plumbing problems. It can waste over 200 gallons per day, costing you hundreds of dollars per year in water bills. The good news: most running toilets are easy and affordable to fix.
Inside your toilet tank, a flapper valve seals the water until you flush. When the flapper wears out, water continuously leaks from the tank into the bowl, triggering the fill valve to keep running. The float controls when the fill valve shuts off — if set too high, water overflows into the overflow tube.
Slide to see how we permanently resolve running toilet issues.


The most common fix is replacing the flapper ($5-$10 at hardware stores). Turn off the water, flush to empty the tank, unhook the old flapper, and snap on the new one. If the float is set too high, adjust it down.
Call a professional if: replacing the flapper doesn't fix it, the fill valve needs replacement, the toilet is old and inefficient, or water is leaking from the base (wax ring issue). A plumber can replace all internal components or install a new toilet.
Call Ergon Plumbing when DIY flapper replacement doesn't stop the running, the toilet is leaking from the base, you want to upgrade to a water-efficient model, or you need multiple toilets serviced. We fix running toilets same-day with upfront pricing.
A running toilet can waste 200+ gallons per day — that's 6,000+ gallons per month and over $100 in water costs. It's one of the biggest sources of water waste in a home. Fixing it promptly saves significant money.
Free diagnosis. Same-day service. Licensed CT plumber.