Both of my toilets starting having the same leak at the same time and I can't figure out where it is coming from or how to fix it. The water is coming out from the tank where it meets the bowl and is slowly dripping out the bolt holes. I replaced the bolts and rubber washers that hold the tank to the bowl but the problem continued.

For what it's worth, my furnace went out this winter and the house was 45 or 50 degrees for a week or so and that is about the time when the leak started.

  • Are you sure they're leaking and not just collecting condensation? – isherwood Mar 21 '18 at 18:25
  • When our furnace was out, I thought that may have been it. But it has continued since then. Also the water only comes from the bottom of the tank where it meets the bowl. – rlltiderll Mar 21 '18 at 18:28
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    Did you replace the large (3"-4") rubber seal that goes between the tank and the bowl or just the bolts and the bolt seals? Can you put some food coloring in the water to make absolutely sure that it is tank water that is leaking out? – JPhi1618 Mar 21 '18 at 18:40
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    turn off the supply line .... see if water level in tank drops – jsotola Mar 21 '18 at 23:36
  • When this occurred was anything else done just prior ? The tank main seal could be defective, the tank might be off the seal (budged not seated properly) bolts might not be sealed properly or seated properly . Could have tightened them too much and cracked the tank . Could it be leaking at the inlet line ? – Ken Mar 23 '18 at 7:34

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