SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/home-a-leak-dye

Food coloring in your toilet tank shows up in the bowl after 10 minutes. What does that mean?

The toilet is leaking (usually a worn flapper).

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  1. The toilet is working perfectly
  2. The water is too hard
  3. The toilet is leaking ✔

Why: If any color shows up in the bowl after 10 minutes without flushing, you have a leak. Flush right away afterward so the dye does not stain the tank.

Huh, didn't know that: Worn toilet flappers, dripping faucets and other leaking valves are common household leaks.

The dad joke
What do you call a man with a toilet on his head? John.
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References

Answer: The toilet is leaking. If any color shows up in the bowl after 10 minutes without flushing, you have a leak. Flush right away afterward so the dye does not stain the tank.

  1. EPA WaterSense: Fix a Leak Week www.epa.gov/watersense/fix-leak-week
    If any color shows up in the bowl after 10 minutes, you have a leak.
    Checked 2026-10-10.

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Home & YardHow often should a toilet flapper be replaced, at minimum, according to EPA WaterSense?Home & YardTo check for hidden leaks, how long do you watch the water meter with no water in use?Home & YardA faucet that drips once per second wastes more than how much water per year?

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