How to Fix a Running Toilet
Quick Answer
Check the flapper, adjust the fill valve, or replace the float mechanism to stop water from continuously flowing into the bowl.
How to troubleshoot a Running Toilet
A running toilet can waste hundreds of gallons of water per day. This guide covers diagnosing and fixing the most common causes.
Step-by-Step Fix
- Turn off the water supply to the toilet by turning the shut-off valve clockwise.
- Remove the toilet tank lid and set it aside carefully.
- Check the flapper at the bottom of the tank and replace it if warped or worn.
- If the water level is too high, adjust the float arm or the fill valve screw to lower it.
- Ensure the chain connecting the flapper to the flush lever has about half an inch of slack.
- Flush the toilet and listen for the water to stop running after the tank refills.
Common Error Codes
| Code | Meaning | Resolution |
|---|---|---|
| Water runs continuously | Flapper not sealing or fill valve stuck | Replace the flapper or clean the fill valve diaphragm. |
Frequently Asked Questions
How much water does a running toilet waste?
Up to 200 gallons per day, depending on the severity of the leak.