July 21, 2024
Kitchen Drain

The kitchen drain plays a vital role in our daily lives, helping to dispose of food scraps and waste. However, be careful of what goes down the drain to avoid clogs, blockages, and potential damage to the plumbing system.

This article explores what not to put down your kitchen drain. From grease and oil to fibrous foods and coffee grounds, certain items can wreak havoc on your plumbing and lead to costly repairs.

By understanding kitchen drain safety and adopting proper waste disposal practices, you can maintain a healthy and efficient plumbing system in your home.

Grease and Cooking Oil

You should never put grease and cooking oil down your kitchen drain. These substances start as liquids when hot but solidify as they cool, leading to clogs in your pipes.

Additionally, grease and cooking oil can coat the inside of the pipes, reducing water flow and causing blockages over time. However, a professional plumbing company can resolve this issue.

Instead of pouring them down the drain, allow the grease and oil to cool and solidify in a container, and then dispose of them in the trash. Another option is to recycle used cooking oil at designated drop-off points.

Coffee Grounds

Coffee grounds are another common culprit that should not be put down your kitchen drain.

While it may seem harmless, coffee grounds can actually accumulate and cause blockages in your plumbing system. They can clump together and create a thick paste that sticks to the pipes, leading to clogs and backups.

Instead of washing them down the drain, consider disposing of coffee grounds in a more appropriate way. You can add them to your compost bin or use them as a natural plant fertiliser.

Starchy Foods

Starchy foods like rice, pasta and potatoes should never be disposed of down the kitchen drain.

When these foods come into contact with water, they expand and can become sticky, causing blockages in your pipes.

They have a tendency to cling to the inner surfaces of the pipes, creating a build-up that restricts the flow of water and leads to clogs. It’s best to avoid rinsing starchy foods in the sink or disposing of them through the drain.

Instead, use a strainer to collect any food bits and dispose of them in the trash or compost. This simple practice can help prevent plumbing issues and free your kitchen drain from clogs.


Eggshells should not be put down the kitchen drain as they can cause problems which could be solved only by a licensed plumber or plumbing company. 

Despite their hard and seemingly harmless exterior, eggshells can easily break into small pieces when crushed. 

These small fragments can get caught in the pipes and, over time, lead to blockages. The membrane inside the eggshell can also stick to the pipes, exacerbating the problem. It is best to dispose of eggshells in the trash or consider composting them.

Fibrous Vegetables

Fibrous vegetables, such as celery, onion skins, and corn husks, should not be put down the kitchen drain.

These vegetables contain tough fibres that can easily wrap around and clog the blades of your garbage disposal or create blockages in your pipes. The long, stringy nature of these vegetables makes them particularly problematic. 

Instead of disposing of fibrous vegetables down the drain, composting them or disposing of them in the regular trash is what’s best. This will help prevent plumbing issues and keep your kitchen drain free from clogs and backups.

Fruit Peels and Seeds

Fruit peels and seeds should be avoided when it comes to disposing of them down the kitchen drain. The robust, fibrous nature of fruit peels can cause clogs in the pipes, while seeds can easily get lodged and obstruct the drainage system.

Additionally, certain fruits, like citrus fruits, have high acidity levels that can corrode the pipes over time. It is best to dispose of fruit peels and seeds in the compost bin or the regular trash to prevent plumbing issues.

Chemicals and Harsh Cleaners

Chemicals and harsh cleaners should never be poured down the kitchen drain. These substances can be extremely damaging to your plumbing system and the environment.

Chemical cleaners often contain strong acids or caustic ingredients that can corrode and erode the pipes over time. Additionally, these chemicals can harm the beneficial bacteria in septic systems, disrupting the natural decomposition process.

Instead of using chemical cleaners, opt for environmentally friendly and non-toxic alternatives.

Simple mixtures of vinegar, baking soda, and hot water for everyday cleaning can effectively remove grease and grime without causing harm.

If you need to dispose of hazardous chemicals or cleaners, consult your local waste management facility for proper disposal methods.

Non-Biodegradable Items

Such items should never be discarded down the kitchen drain. These materials do not break down naturally and can cause serious clogs and blockages in the plumbing system.

Non-biodegradable items are plastic wrappers, bottle caps, aluminium foil, and a few other packaging materials. These items can get stuck in the pipes, causing backups and potential damage to the plumbing system.

Proper disposal of non-biodegradable items is essential. Make sure to dispose of these materials in the appropriate waste bins or recycling containers.

It’s important to be mindful of what you throw down the drain to maintain the smooth operation of your plumbing system and to protect the environment from unnecessary pollution.

Proper Drain Maintenance

Proper drain maintenance is crucial to prevent clogs and keep your kitchen drain running smoothly.

Avoid pouring grease, oil, coffee grounds, starchy foods, eggshells, fibrous vegetables, fruit peels, seeds, chemicals, and non-biodegradable items down the drain.

Instead, use a strainer to catch food scraps and dispose of them in the trash. Regularly flush the drain with hot water and vinegar to break down residue and prevent buildup.

Abstain from using harsh chemical drain cleaners as they can cause damage to the pipes. If you encounter persistent clogs or plumbing issues, it’s best to consult a professional plumber to assess and address the problem.

Taking these preventive measures will help maintain the functionality and longevity of your kitchen drain.


Being cautious about what you dispose of in your kitchen drain is crucial for its proper functioning and to prevent plumbing problems.

It is important to avoid pouring items such as grease, oil, coffee grounds, starchy foods, eggshells, fibrous vegetables, fruit peels, seeds, chemicals, and non-biodegradable items down the drain.

You can ensure a smooth-running and efficient kitchen plumbing system by practising good drain maintenance and adopting responsible habits.

These preventive measures will save you both time and money, sparing you from the inconvenience and potential expenses of dealing with clogged drains and plumbing repairs in the future.

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