Why Does a Toilet Constantly Run?

Like every other home appliance, toilets encounter maintenance issues.

Like every other home appliance, toilets encounter maintenance issues. For example, one must identify the cause if the system doesn't stop running. In most cases, the problem will be minor and only need a little expertise.

Let's look at six possible reasons why a toilet constantly runs.

The toilet handle is stuck

The toilet handle regulates the flush. If the handle is stuck, the water will likely keep running, even to the point of overflow. At the same time, a jammed handle can result in the toilet flushing only to a degree or not at all. The toilet handle can also stay in the flush position, resulting in the water tank never refilling.

A gentle tug on the handle leaver will solve this issue as long as it is only minor. But if a handle is jammed beyond repair, the only solution is to call a professional service to replace the handle outright.

The toilet float is too high

The float ball inside the toilet tank must rise and drop to regulate the water. When a float ball is set too high, the water keeps running. The float's adjustment screw can reset the toilet flow to control the water flow in and out of the tank.

The fill valve is faulty or old

In older homes, toilets have fill valves that can't handle the water pressure from the community water supply. Reducing the water pressure within the house is one solution to this problem. Alternatively, a toilet pressure-reducing valve can regulate water gushing and stop the toilet from running.

The flapper is old and worn-out

Old flappers no longer seal properly, resulting in constant water flow from the tank into the toilet. To determine whether a worn-down flapper is causing the toilet to keep running, examine it, check for tears, stretches, or holes, and replace it if necessary.

The refill tube is too long

When the refill tube is too long, it keeps pumping water into the toilet bowl. Shortening it will adjust the suction the refill valve creates. The refill tube may also be in the wrong position, resulting in a continuous flow into the toilet.

The toilet is blocked

If a blockage exists, the water may keep running to clear it. Use a toilet auger or plunger to clear blockages and see if it stops the toilet from running.

Need a DIY genius? Call a professional!

These are the possible reasons why a toilet runs constantly. The problem is usually minor, and any professional can quickly resolve it. While a simple DIY job may solve the issue, it is best to consult an expert for safety reasons.


If you need a licensed, bonded, insured plumber for your Phoenix area leak or your next plumbing project, call MNS Plumbing today at 602-362-4524.

Previous
Previous

Common Reasons a Shower Leaks Water

Next
Next

A Simple Plumbing Guide for New Homeowners