Most universal flappers, fill valves, floats are designed to be compatible with standard toilets and come with assembly instructions. It's inexpensive and will quickly fix most running toilet issues.

In many standard toilets, this valve consists of a flapper — a rubber or soft plastic plug located at the very bottom of the toilet tank. This flapper connects to the flush handle arm via a chain.

The toilet is running because either water is running in the toilet or water is running out. You need to replace the fill valve and/or the flapper.

Over time, the flappers decay and allow water to slowly leak into the bowl. Another common cause of toilet leaks is when the float arm is not set properly, which causes water to constantly flow down ...

Q: My toilet is causing me fits. The water from the tank is slowly leaking into the bowl, and I can’t figure out why. I have replaced the flapper, but the problem persists. What else should I do ...

Replacing your toilet flapper could save you $50 a month, a TikTok video said. That’s likely only if your current flapper is leaking or has another issue.

How to Repair a Running Toilet 1. Adjust the Float The float arm controls the water level in your tank. If it’s set too high, water will keep running into the overflow tube. Locate the float: It ...