If you do a lot of work in your kitchen, you might have the habit of washing just about anything down your sink. This situation is especially common when you are in a hurry or tired, and you simply want things to get done around the kitchen. Unfortunately, there are some things that you should never wash down your sink, as they can lead to a plumbing disaster.

If you do not want to end up with clogged pipes, here are the top six kitchen scraps you should never allow to get into your kitchen sink:

– Pasta or Rice

Pasta or rice may smoothly go down your drain, but it will continue absorbing liquids once it reaches the bottom part. Over time, it will take up more space than you initially thought possible. The best way to dispose of food and stale starches, such as pasta, rice, and bread, is by putting them in the compost.

– Coffee Grounds

One common everyday item that can clog your kitchen sink is coffee grounds. This may be due to the old saying that coffee grounds are great for clearing pipes and making them smell fresh, but the reality is the exact opposite.

If coffee grounds get stuck in your pipes, they solidify and become as hard as cement, and you know what comes next after a solid blockage like that. For a better way to dispose of them, use them as fertilizer in your garden or put them in your compost instead.

– Cooking Oil and Other Fats

Grease is another top cause of drain clogs. Hot grease from cooking oils and other fats can stick to the inside of your pipes. Food will then stick to this grease, and more grease will stick on the food, and the cycle will continue.

To dispose of oil and grease, keep them in a container and put it in the freezer. Once the container is full, throw it in the trash. Some recycling centers also accept used oil, so check whether the recycling centers near your place do the same. If you accidentally get grease in your drain, pour boiling water to liquefy it and help keep it moving.

– Fruit Stickers

Stickers are made from plastic, and even if they manage to break free from the pipe, they will still end up as water pollutants. These small pieces can end up getting stuck together or in wastewater treatment plant pumps, screens, or filters. You can help prevent this by growing your produce or buying from organic farms that do not use stickers.

– Fruit Pits

Fruit pits are the inner layers of a fruit that protects the seeds. Some homeowners prefer to throw them into the kitchen sink because they take a while to decompose in a compost pit. However, note that these can be tough, and a garbage disposal will not break them thoroughly enough to completely flush down the drain. Consider repurposing them instead. They are great for flavouring and can be part of many recipes.

– Egg Shells

Even if you grind your eggshells into tiny pieces, they can harm your pipes in various ways. One, they can dull the blades of your disposal. Two, when eggshells get confined in small spaces, they tend to clump together and can further clog your pipe. Consider placing them immediately in your compost bin instead of throwing them into your sink.


There are other kitchen scraps that you should remember not to wash down your kitchen sink, but a good rule of thumb is to simply avoid washing down any solids altogether. That conscious act can help save your pipes and extend their lifespans. It will also save you from the headache of having a clogged pipe or a leaking kitchen sink.

If you are in need of plumbing contractors in Edmonton, we at Capital Plumbing & Heating can take care of your drain cleaning and other plumbing concerns for you. Simply book our service, and we will fix that drain problem in no time.