Quick checks
- Lift the tank lid and adjust the float
- Check the flapper and chain for slack
- Look for water flowing into the overflow tube
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San Diego · Human Guidance Layer
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Page · Toilet Running
Toilet Keeps Running in San Diego - What to Check
A running toilet usually means a simple part is worn or misaligned. A few checks can stop the leak.
Likely causes
- Worn flapper or seal
- Faulty fill valve
- Misadjusted float height
Who to call
- Plumber for replacement parts
- Property manager if you rent
- Water utility for usage spikes
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Updated February 2026