How to Fix a Running Toilet (The Easy Way)

A running toilet can waste up to 200 gallons of water per day, costing you money and putting unnecessary strain on your plumbing. Luckily, fixing it is usually quick and simple.

Common Causes

Worn or warped flapper
Incorrect chain length
Float set too high
Faulty fill valve

Step-by-Step Guide

1. Turn Off Water Supply

Locate the shutoff valve behind the toilet and turn it clockwise.

2. Inspect the Flapper

Lift the tank lid. The flapper is the most common culprit.
If it’s brittle, warped, or doesn’t seal, replace it (cheap and easy).

3. Adjust the Chain

The chain should have a little slack but not so much that it gets stuck under the flapper.

4. Set the Float Level

If water is overflowing into the overflow tube, lower the float to reduce the water level.

5. Replace the Fill Valve (if needed)

If water doesn’t stop running even after adjustments, the fill valve may need replacement.

Helpful Tips

Always check for sediment buildup in older toilets.
Test your repair by flushing several times.

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