5 Common Reasons Why Your Toilet Won’t Flush (and How to Fix Them)
A properly functioning toilet is something we often take for granted—until it stops working. If you find yourself dealing with a toilet that won’t flush, don’t panic. There are several common reasons why this issue occurs, and most of them are fixable. In this article, we’ll explore the five most common reasons your toilet won’t flush and provide practical solutions to get things flowing again. If you’re wondering what to do when your toilet won’t flush, keep reading for tips to troubleshoot and fix the issue.
1. Clogged Toilet
The Problem: A clog is one of the most common reasons a toilet won’t flush properly. It’s often caused by flushing items that don’t break down, such as wipes, paper towels, or excessive amounts of toilet paper. Over time, these materials can build up and block the flow of water.
The Fix:
- Start with a plunger: Place the plunger over the toilet drain and pump it firmly to create suction. This can often dislodge minor clogs.
- Use a toilet auger: If the plunger doesn’t work, a toilet auger (also called a drain snake) can help break up or remove the obstruction.
- Avoid harsh chemical drain cleaners: These can damage your plumbing over time. Instead, opt for natural remedies like a mix of baking soda and vinegar if the clog is minor.
- Clear the inlet holes: Over time, the small holes located under the rim of the toilet bowl can become clogged with mineral deposits. This can weaken the flush. Use a wire or a brush to clean these holes and restore water flow.
When to Call a Pro: If the clog persists despite your efforts, it’s time to contact a professional plumber like those at New Canadian Drain & Plumbing. Persistent clogs may indicate a deeper issue in your plumbing system.
If you’re dealing with persistent issues and are considering replacing your toilet, check out our guide on Which Toilet Do Plumbers Recommend? for expert advice on selecting the best toilet for your needs.
2. Low Water Level in the Tank
The Problem: If your toilet tank doesn’t fill with enough water, the flush will lack the power needed to empty the bowl. This is often caused by a misadjusted float, a faulty fill valve, or an issue with your home’s water supply.
The Fix:
- Check the float: Open the tank and make sure the float is adjusted properly. The float controls the water level and should be set so the tank fills to the appropriate level (usually indicated by a line inside the tank).
- Inspect the fill valve: If the float is set correctly but the tank still isn’t filling, the fill valve may need cleaning or replacement.
- Test your water supply: Ensure the water supply valve near the toilet is fully open. If water flow to the tank is weak, you might have a plumbing issue that needs attention.
When to Call a Pro: If you’ve adjusted the float and checked the water supply but the issue persists, it’s time to consult a professional.
3. Faulty Flapper
The Problem: The flapper is a rubber seal that controls the flow of water from the tank to the bowl during a flush. If the flapper is damaged, warped, or not sealing properly, water won’t be released effectively, resulting in a weak or incomplete flush.
The Fix:
- Inspect the flapper: Open the tank and look for signs of wear, warping, or mineral buildup on the flapper.
- Clean the flapper: If it’s covered in grime or mineral deposits, clean it with warm, soapy water.
- Replace the flapper: If the flapper is damaged, replacement is simple and inexpensive. Purchase a compatible flapper from your local hardware store and follow the installation instructions.
When to Call a Pro: If replacing the flapper doesn’t solve the problem or if you’re unsure about installation, a plumber can help. For reliable toilet repair and replacement services, our 24-hour services are available if your toilet repair can’t wait until morning.
Blocked Plumbing Vents
The Problem: Toilets rely on plumbing vents to equalize pressure and allow waste to flow smoothly. If these vents become blocked by debris, such as leaves or bird nests, it can cause slow or incomplete flushing.
The Fix:
- Inspect the vent pipe: Plumbing vents are usually located on your roof. Look for any visible blockages.
- Clear the vent: Use a garden hose to flush out debris. A plumber’s auger can also help remove stubborn blockages.
When to Call a Pro: Clearing plumbing vents can be dangerous, as it often involves climbing onto your roof. It’s best to leave this task to experienced professionals.
Worn-Out or Damaged Toilet Components
The Problem: Over time, the internal components of your toilet, such as the flush handle, chain, or other mechanisms, can wear out or break. This can lead to issues like the handle sticking, the chain disconnecting, or the toilet not flushing at all.
The Fix:
- Inspect the components: Check the flush handle, chain, and other parts inside the tank for signs of wear or damage.
- Tighten or replace parts: Tighten loose components or replace damaged parts with new ones from a hardware store. Most parts are affordable and easy to install.
When to Call a Pro: If you’ve replaced the components but the toilet still won’t flush, the problem may lie deeper in the plumbing system.
When to Call a Professional Plumber
While many toilet flushing issues can be resolved with DIY fixes, some problems require professional expertise. If you’ve tried the above solutions and your toilet still won’t flush, it’s time to call a plumber. Persistent issues could indicate a more serious plumbing problem, such as a sewer line blockage or damaged pipes.
At New Canadian Drain & Plumbing, we offer expert plumbing services to resolve even the toughest toilet issues. With years of experience and a commitment to customer satisfaction, our team is here to help. Contact us today for reliable, professional assistance.