1. The Toilet Won’t Flush Properly

Is your toilet failing to flush completely or just won’t flush at all? This is one of the most common toilet issues homeowners face. It can be caused by a number of different problems, but don’t panic—most of the time, it’s something simple that you can fix on your own.
While smaller valves may control water to individual fixtures (like sinks, toilets, or dishwashers), the main valve controls the flow of water to your entire home, so it’s crucial to know where it is and how to use it.

Possible Causes:

• Low Water Level: If the water in the toilet bowl is low or doesn’t rise high enough, it may not be able to flush waste properly.
• Clogged Drain: A partial clog in the drain line can prevent the toilet from flushing properly.
• Faulty Flapper: The flapper (the rubber valve that controls the release of water from the tank) may be worn out or not sealing correctly.
• Weak Flush Valve: If the flush valve isn’t opening fully, the toilet won’t get enough water to flush efficiently.

How to Diagnose:

• Check the Water Level: Open the toilet tank and look at the water level. The water should be about an inch below the overflow tube. If it’s too low, you may need to adjust the fill valve or replace it.
• Check for Clogs: If the flush seems weak, try flushing with less water in the bowl (use a bucket or small container of water) to see if the clog is deeper down. You can also use a plunger or auger to clear the line.
• Inspect the Flapper: If the flapper is worn, replace it. It’s an easy and inexpensive fix that can restore your toilet’s flushing power.

2. Toilet Keeps Running After Flushing

A running toilet is not only annoying, but it can also waste a lot of water (and money on your water bill). If your toilet keeps running after you flush, it usually points to an issue with the toilet’s internal mechanisms.

Possible Causes:

• Worn Flapper: A worn or misaligned flapper allows water to constantly leak into the bowl, keeping the toilet running.
• Faulty Fill Valve: If the fill valve doesn’t stop filling the tank at the correct level, the toilet will continue to run.
• Overflow Tube Problems: If the water level in the tank is too high, it can continuously overflow into the overflow tube and cause the toilet to run.

How to Diagnose:

• Check the Flapper: Lift the tank lid and inspect the flapper. If it’s damaged, worn, or doesn’t sit properly on the valve seat, replace it.
• Test the Fill Valve: After a flush, listen to the toilet tank. If you hear the water filling for too long, it could be that the fill valve isn’t shutting off properly. Adjust the float or replace the fill valve if necessary.
• Adjust the Water Level: Check the water level in the tank. If it’s too high, adjust the float or flush valve to ensure the water stops just below the overflow tube.

3. Toilet Won’t Stop Clogging

A toilet clog is probably one of the most frustrating issues, and while it’s common for toilets to clog from time to time, frequent clogs could signal a bigger problem.

Possible Causes:

• Too Much Toilet Paper: Overloading the toilet with paper or non-flushable items can easily cause a clog.
• Object in the Toilet: Children or pets sometimes flush objects that don’t break down (like toys, wipes, or other debris).
• Sewer Line Blockage: If your toilet is regularly clogging, there might be a blockage further down the drain or in the sewer line.

How to Diagnose:

• Use a Plunger: If your toilet won’t flush properly, try using a plunger. Make sure it has a good seal and plunge vigorously. If the clog clears, it was likely a minor blockage.
• Check for Persistent Clogs: If the toilet keeps clogging despite using a plunger, the issue might be deeper in the pipes or sewer line. A toilet auger (or plumbing snake) can help clear out tough clogs.
• Call a Professional: If the problem persists or the toilet clogs more than once a week, you may have a deeper issue in the plumbing, such as tree root intrusion or a sewer line backup. A plumber can assess and address the problem.

4. Toilet Bowl Water Level Is Too High or Too Low

If the water level in your toilet bowl is too high or too low, it can cause flushing problems and potentially lead to clogs or an unpleasant appearance.

Possible Causes:

• Clogged Rim Holes: The small holes around the toilet’s rim that allow water to enter the bowl may be clogged with mineral buildup.
• Improper Water Level in the Tank: If the water level in the tank is incorrect, it can affect how much water enters the bowl during a flush.

How to Diagnose:

• Check the Tank Water Level: As mentioned earlier, the water level in the tank should be about an inch below the overflow tube. If it’s too high or too low, adjust the fill valve.
• Clean the Rim Holes: Use a wire hanger or small brush to clear out any mineral buildup around the rim holes. This can help restore proper water flow and improve your flush.
• Check for Blockages: If the water level in the bowl is high or rising, it could indicate a clog or blockage in the drain line. Use a plunger or auger to address the problem.

5. Toilet Is Making Strange Noises

Is your toilet making gurgling, whistling, or bubbling noises? These sounds can be annoying, but they often point to specific issues within your plumbing system.

Possible Causes:

• Air in the Plumbing Lines: Trapped air in the plumbing can cause strange noises when water is flowing through the pipes.
• Clogged Vent Pipe: The vent pipe on your roof allows air to enter the plumbing system and prevents pressure buildup. If the vent pipe is clogged, you may hear gurgling noises as air struggles to escape.
• Low Water Pressure: If your toilet isn’t receiving enough water during flushing, it may make a whistling sound or other unusual noises.

How to Diagnose:

• Check for Air in the Pipes: If you hear gurgling or bubbling noises while flushing, check other fixtures in your home (like sinks and bathtubs). If they’re also making noise, it may indicate trapped air in your pipes.
• Inspect the Vent Pipe: Check for obstructions in the vent pipe (e.g., leaves, nests). If the vent is clogged, it may need to be cleaned out by a professional plumber.
• Test Water Pressure: If your toilet’s flush seems weak or the toilet is making strange noises, check the water pressure. If it’s low, you may need to call a plumber to inspect the main water line.