A running toilet is not just a nuisance but a significant waste of water and money. The constant flow of water can increase your water bill and impact the environment. Fortunately, fixing a running toilet is a task most people can handle with a bit of guidance. This guide covers the common causes and solutions to stop a running toilet and save water.

Identifying the Problem

Before diving into the fixes, it’s crucial to identify the root cause of the issue. A running toilet typically falls into one of these categories: faulty flapper, overflow issues, or problems with the fill valve. Here’s how to diagnose each one.

Faulty Flapper

The flapper is the rubber seal at the bottom of the tank that lifts when you flush, allowing water to flow into the bowl. Over time, flappers can become worn or warped, leading to an improper seal and continuous water flow.

How to Check:

• Remove the lid from the toilet tank.
• Flush the toilet and watch the flapper as it lifts and falls.
• If it doesn’t create a tight seal when it closes, it’s likely the cause of the running water.

Overflow Tube Issues

The overflow tube prevents the toilet tank from overflowing by directing excess water into the bowl. If the water level is set too high, water will constantly flow into the overflow tube.

How to Check:

• Look at the water level in the tank.
• If it’s above the opening of the overflow tube, adjust the fill level.

Fill Valve Problems

The fill valve controls the flow of water into the toilet tank. If it’s not working correctly, it can cause the tank to fill too much or not enough.

How to Check:

• Listen for any hissing or unusual noises.
• Check if the water level stops rising at the correct point.

Fixing the Flapper

If the flapper is the problem, it’s usually an easy fix. Here’s how to replace it:

1. Turn off the Water Supply: Locate the shutoff valve behind the toilet and turn it clockwise to stop the water flow.
2. Drain the Tank: Flush the toilet to drain most of the water. Use a sponge or towel to remove any remaining water at the bottom of the tank.
3. Remove the Old Flapper: Disconnect the flapper from the chain and unhook it from the pegs at the bottom of the overflow tube.
4. Install the New Flapper: Attach the new flapper to the pegs and connect the chain. Ensure it has a slight slack when the flapper is closed.
5. Turn on the Water Supply: Turn the shutoff valve counterclockwise to restore water flow and test the toilet by flushing.

Adjusting the Water Level

If the water level is too high, adjust the fill valve. Depending on your toilet, there are two common types of fill valves: float cup and float ball.

Float Cup

1. Locate the Adjustment Screw: Find the screw on top of the fill valve.
2. Turn the Screw: Turn the screw clockwise to lower the water level or counterclockwise to raise it. Make small adjustments and check the level.

Float Ball

1. Locate the Adjustment Clip: Find the clip on the metal rod connecting the float ball to the fill valve.
2. Slide the Clip: Move the clip down to lower the water level or up to raise it. Adjust incrementally and test by flushing.

Replacing the Fill Valve

If the fill valve itself is the problem, replacing it might be necessary. Here’s a step-by-step guide:

1. Turn off the Water Supply: Shut off the water using the valve behind the toilet.
2. Drain the Tank: Flush the toilet and soak up any remaining water.
3. Remove the Old Fill Valve: Disconnect the water supply line from the fill valve and unscrew the lock nut under the tank. Remove the old valve.
4. Install the New Fill Valve: Follow the manufacturer’s instructions to install the new fill valve. Connect the water supply line and secure it with the lock nut.
5. Turn on the Water Supply: Restore the water flow and adjust the water level as needed.

A running toilet is a manageable fix that can save significant amounts of water and money. Whether the issue lies with the flapper, water level, or fill valve, the solutions are straightforward and can be tackled with basic tools and a bit of patience. If you’re unsure or need professional assistance, reach out to Calix Plumbing for expert help and reliable service. Stop wasting water and start saving today!