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Reviewed by Marcus AldridgeSenior Editorial Reviewer — Plumbing, HVAC & Wet Trades

Wie te bellen · Plumber

Toilet running constantly? Dit is wie je moet bellen

A toilet that keeps running after flushing wastes hundreds of gallons of water per day and drives up utility bills. The most common culprits are a worn flapper valve that no longer seals the flush valve opening, a waterlogged float that cannot shut off the fill valve, an improperly adjusted fill level, or a cracked overflow tube. A plumber can replace the flapper and fill valve, adjust float height, and check the flush valve seat for mineral buildup or warping.

What's going on

How to fix toilet running constantly

Some "toilet running constantly" cases look simple, but getting it wrong almost always costs more than calling a pro: hidden leaks, fire risk, code violations, and insurance headaches. A licensed plumber will diagnose the exact cause, use the right professional tools, and stand behind the repair. Most local pros offer free quotes and can visit the same day or the next.

Who to call

Plumber

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Symptoms to look for

  1. 01

    Water continuously running in the bowl long after flushing

  2. 02

    Toilet handle must be jiggled to stop the water

  3. 03

    Hissing sound coming from the tank that never stops

  4. 04

    Water bill noticeably higher than usual with no other explanation

  5. 05

    Tank water level rising above the overflow tube

FAQ

Frequently asked questions

Who should I call for: Toilet running constantly?

Call a licensed plumber. Plumbers have the specialized training, tools, and insurance to diagnose toilet running constantly safely and stand behind the fix. Most offer free quotes and can visit the same day or the next.

Can I fix this myself?

Some minor cases can be handled DIY, but most require a licensed plumber to avoid costly rework and safety risks. A free quote takes under a minute.

How fast can a pro come out?

Most plumbers offer same-day or next-day visits for non-emergency issues. True emergencies (burst pipes, gas smell, no heat in winter) are typically handled within 1–4 hours.

How much does it cost to fix?

Costs vary by severity and your location. Submit a free quote request to get real pricing from local pros in your area.

What are the signs of: Toilet running constantly?

Water continuously running in the bowl long after flushing. Toilet handle must be jiggled to stop the water. Hissing sound coming from the tank that never stops. Water bill noticeably higher than usual with no other explanation. Tank water level rising above the overflow tube.