Last Updated: February 25, 2026 — Reviewed by Brian Hayes, Licensed Master Plumber
Most homeowners encounter clogged drains every once in a while. Whether it’s your sink or your bathtub draining too slowly, we all agree that clogs can really spell trouble – especially if things go beyond the usual single clog. We’re talking about that disastrous situation when all the drains begin backing up at the same time. Yes, we mean a sewer drain clog!
If you are curious about the probable causes of sewer drain clogs, here are the top five on our list:
- Your Toilets
You have been told by your plumber over and over, and you will be told again – do not treat your toilet like it’s a trash bin. It’s not. That’s no place for garbage like fruit peels, feminine products, wipes (even if they’re advertised as flushable), and more. When you make flushing things down your toilet a habit, then you should prepare yourself for a major sewer drain clog in the near future.
- Your Sagged Sewer Line
We know, it’s not your fault and there’s nothing you can do to prevent it from happening. As years pass, sewer lines could really sag. So if your house and your pipes are quite old, chances are, that clog is caused by a sagging sewer line that cannot efficiently allow waste to exit your home.
- Your Garbage Disposal
If you are careless and you just throw your leftovers or meal remnants down the garbage disposal, you are well on your way to clogging your sewer drains big time. Grease is also a culprit! You can avoid throwing things down your garbage disposal accidentally by simply investing in a sink strainer.
- Some Stray Debris
For some reason, debris can really find their way to your sewer line. Grass, leaves, mud, and soil can easily cause a blockage, or worse, a break.
- Some Tree Roots
If there is a tree in your yard, and it is quite big, then you can expect that there are big roots too. These roots can find their way into your pipes, especially during times when there’s very little rain and they grow and seek water. They can clog your pipes and even break the line itself.
We know sewer drain clogs can quickly become frustrating, especially if it is your first time to experience one. You should know, however, that help is only one call away. Hayes Plumbing has a team of expert plumbers who can easily deal with your concerns. So if you notice that your drains are backing up, call us immediately!
Additional Resources
Frequently Asked Questions
How much does clog cost in Oshawa?
The cost of clog in Oshawa varies depending on the scope of work, materials selected, and bathroom size. Hayes Plumbing provides free in-home estimates throughout Durham Region so you know exactly what to expect before any work begins.
How long does clog take to complete?
Most clog projects in Durham Region take between 2 and 4 weeks depending on the complexity and material lead times. Hayes Plumbing coordinates all trades to keep your project on schedule.
Do I need a permit for clog in Ontario?
In Ontario, you typically need a building permit if your clog project involves structural changes or moving plumbing lines. Hayes Plumbing can advise whether your specific project requires a permit from the City of Oshawa.
Need help with your bathroom renovation? Hayes Plumbing & Bathroom Renovations serves Oshawa, Ajax, Whitby, Clarington, and Pickering. Contact us or call (905) 576-3043 for a free estimate.
