Check the Water Level in the Tank

The water level inside your toilet tank is one of the first things to consider. Lift the tank lid and take a peek. The water should be about an inch below the overflow tube. If it’s too low, your toilet won’t have the power to flush properly.

You can adjust the float (a plastic or metal ball or cup) to fill the tank more. Turn the adjustment screw or gently bend the arm to raise the float. This lets more water into the tank and gives the flush more force.

If this doesn’t help, Express Plumbing & Rooter recommends checking the flapper next.

Inspect the Flapper

The flapper is the rubber piece at the bottom of the tank that lifts when you flush, letting water rush into the bowl. If it’s not sealing properly or is worn out, it could cause a weak or no flush.

To test it, press down on the flapper. If the toilet flushes normally, the flapper likely needs to be replaced. It’s an easy fix you can do yourself. Just turn off the bathroom water, flush to empty the tank, unhook the old flapper, and clip a new one into place.

While you're in there, be gentle. If you're unsure or spot cracks in the tank parts, it's time to call a plumber who can take a closer look.

Make Sure the Chain Isn’t Too Loose or Too Tight

If the chain connecting the flush handle to the flapper is too loose, it won’t lift the flapper high enough. If it’s too tight, the flapper won’t seal back down. Either way, it can stop your toilet from flushing properly.

Adjust the chain so there’s a little slack when the flapper is closed. This helps ensure the flapper opens and closes completely.

If the chain has rusted or broken, replacing it is simple and affordable. Most hardware stores sell new handles and chain sets. If you want to skip the hassle, contact Express Plumbing & Rooter for help.

Check for Clogs in the Trap or Drain

Sometimes the problem isn’t inside the tank—it’s in the bowl or drainpipe. If you hear a gurgling sound or water backs up, there may be a clog in the trap or deeper in the drain line.

Try using a plunger first. Place it over the hole in the toilet bowl and push up and down firmly for about 30 seconds. This can clear minor clogs.

If plunging doesn’t work, you might need a toilet auger. It’s a flexible tool that can remove clogs deeper into the pipe. Be careful not to scratch the bowl. And if that still doesn’t do the trick, it’s time to call a plumbing service with the right tools.

Don’t Forget About the Inlet Holes

Small holes under the rim of the toilet bowl allow water to flow in when you flush. If these get blocked with mineral deposits, they can weaken the flush.

Take a small mirror and flashlight to check under the rim. If you see buildup, gently scrub the holes with a wire hanger or a stiff brush. Also, pour vinegar into the overflow tube to help break up hard water deposits.

Keeping these holes clean can improve flushing power and reduce the chance of needing more serious toilet repair later.

When to Call a Professional

If you’ve tried these fixes and the toilet still won’t flush properly, there might be a bigger issue, like a problem with the sewer line in Sun Valley, CA or worn-out internal parts that need replacing.

In those cases, it's smart to call a trusted plumber. A licensed pro from Express Plumbing & Rooter can inspect your system, spot hidden issues, and ensure everything works safely and efficiently.

Don’t Let a Broken Toilet Slow You Down

A toilet that won’t flush can be more than annoying—it can point to deeper plumbing problems that shouldn’t be ignored. While many issues are easy to fix yourself, others require the skills of a trained professional.

If you're tired of guessing or just want the peace of mind of a job done right, don’t wait. Call the experts at Express Plumbing & Rooter. Their team has helped countless homeowners get their bathrooms back in working order—and they’re ready to help you too.

Do you have questions or need fast help? Contact Express Plumbing & Rooter today and let us handle the messy stuff so you don’t have to!