Why Your Toilet Won’t Stop Running (& How To Fix It Right)

A running toilet might seem like an annoying but minor inconvenience. However, left unchecked, it can waste hundreds of gallons of water a day and drive up your water bill. If you’ve tried jiggling the handle and nothing seems to work, don’t worry. We’ve got you covered with a clear guide on what’s happening and how to fix it properly.

Why Fixing a Running Toilet Matters

It’s easy to ignore a running toilet, especially if the sound fades into the background over time. But here’s the problem: even a small leak can waste between 200 and 400 gallons of water per day. This doesn’t just hurt your wallet; it also contributes to unnecessary water waste, which is a growing environmental concern.

Beyond the cost implications, a running toilet can also be a sign of minor issues that, if left unaddressed, could lead to bigger problems. Fixing it quickly can save you money and prevent future headaches.

Common Causes (and How to Fix Them)

1. The Flapper Isn’t Sealing Properly

The most common culprit behind a running toilet is a faulty or worn-out flapper. The flapper is the rubber piece at the bottom of your toilet tank that lifts when you flush. If it doesn’t create a proper seal, water will constantly leak into the toilet bowl and cause the fill valve to continually refill the tank.

How to fix it:

1. Open the tank and check the flapper for wear, warping, or mineral buildup.

2. If it looks damaged, purchase a replacement flapper (available at most hardware stores). Flappers are inexpensive and easy to replace.

3. Before installing the new one, make sure the chain isn’t too tight or too loose, as improper chain placement can prevent the flapper from sealing completely.

It’s a quick fix that usually takes less than 10 minutes!

2. The Fill Valve Isn’t Working

The fill valve controls how much water enters the tank after you flush. If it’s not functioning properly, you might hear the sound of water constantly flowing into the overflow tube.

How to fix it:

1. Try adjusting the float or the height of the fill valve using the instructions that came with the part.

2. If the valve is old, corroded, or damaged, replace it. Modern fill valves are affordable and often come with straightforward installation guides to help you get the job done without calling a professional.

3. The Float Is Set Too High

If you have a ball float or a float cup, it controls when the water shuts off. If it’s set too high, the water will continue to flow into the tank and then out through the overflow tube.

How to fix it:

1. Adjust the float by carefully bending the arm of a ball float downward or moving the clip on a float cup.

2. Water levels should sit about one inch below the top of the overflow tube.

3. If the float appears damaged or doesn’t respond to adjustments, it might be time to replace it.

What If None of These Fixes Work?

If you’ve checked the flapper, fill valve, and float and your toilet is still running, you could be dealing with older or more worn-out components. Sometimes, multiple minor issues could be at play, making it difficult to spot the precise problem.

When in doubt, calling a professional plumber is a good idea. They can quickly diagnose the issue and recommend a long-term solution, saving you time and additional frustration.

How to Prevent Running Toilets in the Future

Routine maintenance can save you from dealing with a running toilet again. Here are a few tips to keep your toilet’s components in good working order:

1. Check inside the toilet tank every few months for signs of wear or build-up on parts like the flapper and fill valve.

2. Watch for sudden increases in your water bill, which could indicate small leaks even if you don’t hear the toilet running.

3.  Replace cheap plastic components every few years to avoid wear and tear that can lead to running water.

A Small Fix with Big Benefits

A running toilet is one of the easiest plumbing problems to fix, even for someone with little to no DIY experience. By tackling the issue early, you’ll save water, reduce your utility bills, and avoid more significant plumbing problems down the road.

Don’t have the time or tools to get the job done? A professional service can make quick work of it and ensure everything is done right. Fix it today and stop letting water (and money!) go down the drain.