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Protecting Your Plumbing: What to Put (and What Not to Put) Down Your Kitchen Sink
One of the most common causes of plumbing problems is the misuse of kitchen sink drains. Often, people put things down the drain that shouldn’t be there, causing blockages and damages. Knowing what to put and what not to put down your kitchen sink can help you protect your plumbing and avoid costly repairs.
What to Put Down Your Kitchen Sink:
- Small food scraps (e.g. rice, noodles, small vegetable scraps)
- Liquid cooking oils and fats (e.g. vegetable oil, olive oil)
- Dish soap
- Cold water
Small food scraps and liquid cooking oils can be safely washed down your kitchen sink if you use cold water. Dish soap can also be used to help break down food particles and fats. It’s important to use cold water because hot water can cause oils and fats to solidify and stick to your pipes, which can cause blockages over time.
What Not to Put Down Your Kitchen Sink:
- Bones, skin, and large food scraps
- Coffee grounds
- Eggshells
- Fats and oils that solidify at room temperature (e.g. butter, bacon grease)
- Chemicals, medicine, and cleaning agents
- Hot water
Bones, skin, and large food scraps can cause blockages in your pipes, while coffee grounds and eggshells don’t break down easily and can also cause blockages. Fats and oils that solidify at room temperature should never be poured down the drain, as they can cause serious damage to your plumbing system. Chemicals, medicine, and cleaning agents can also be harmful to your pipes, and hot water can cause oils and fats to solidify and stick to your pipes.
By knowing what to put and what not to put down your kitchen sink, you can help protect your plumbing and avoid costly repairs. If you do experience a plumbing problem, it’s important to call a professional plumber to help resolve the issue safely and effectively.
Protecting Your Plumbing: What to Put (and What Not to Put) Down Your Kitchen Sink
Introduction
Plumbing problems can be costly and inconvenient. One of the primary culprits of clogged pipes is what we put down our kitchen sinks. Knowing what is safe to put down your kitchen sink and what is not can help keep your plumbing in good order and prevent costly repairs.
The Do’s:
1. Food scraps (but only certain kinds)
Food scraps are often the culprit for clogged kitchen sinks. However, not all food scraps are harmful. It is safe to put kitchen scraps that are biodegradable and those that have been ground into small pieces. This can include fruit and vegetable peels, eggshells, and coffee grounds.
2. Dish soap
Dish soap can help break down grease, oil, and other food residues. It is safe to put a small amount of dish soap down your kitchen sink to help keep your pipes clean.
3. Cold water
Running cold water while using your garbage disposal can help break down food scraps and prevent them from building up in your pipes. Cold water can also help solidify fats and grease, making it easier for them to be ground up by your disposal.
The Don’ts:
1. Grease and oil
Grease and oil can solidify in your pipes, leading to clogs and even damage to your plumbing. It is important to properly dispose of grease and oil in your household trash. Alternatively, you can collect your used oil and take it to your local recycling center.
2. Pasta, rice, and other starchy foods
When starchy foods are put down the drain, they can expand with water and cause blockages. It is best to dispose of starchy foods in your household trash or compost.
3. Fibrous foods
Foods like celery, corn husks, and potato peels are fibrous and can wrap around the blades of your disposal, causing it to work less efficiently. These fibers can also accumulate in your pipes, causing clogs. It is best to dispose of fibrous foods in your household trash.
Conclusion
By being mindful of what goes down your kitchen sink, you can help protect your plumbing and prevent costly repairs. Remember to only put biodegradable food scraps down your disposal, use a small amount of dish soap, and run cold water while using your disposal. Avoid putting grease, starchy foods, and fibrous foods down your kitchen sink.
For more information on protecting your plumbing, check out our article on preventing clogged pipes.

FAQs: Protecting Your Plumbing
What should I never put down my kitchen sink?
Grease or fat from cooking, coffee grounds, eggshells, bones, and stringy vegetables like celery or asparagus should never be put down your kitchen sink. These items can clog your drains and cause plumbing problems. Instead, dispose of them in the trash or compost.
What can I put down my kitchen sink?
You can put small amounts of food scraps down your kitchen sink if you have a garbage disposal. However, it’s important to run plenty of cold water while using your disposal to help flush the food debris through the drain. You can also put dish soap and small amounts of cleaning products down your sink, but never pour chemicals, oils, or solvents down the drain.
How can I protect my plumbing?
One of the best ways to protect your plumbing is to avoid putting inappropriate items down your kitchen sink. You should also use a drain catcher to prevent food debris and other small particles from getting stuck in your drains. Additionally, it’s important to have regular plumbing maintenance, including drain cleaning and inspections.

Introduction
When it comes to what you should put down your kitchen sink, there are a few things to consider. Not everything should go down the drain, as it can cause blockages and damage to your plumbing system. In this article, we will discuss some of the things you should and should not put down your kitchen sink.
What to Put Down Your Kitchen Sink
There are a few items that are safe to put down your kitchen sink:
- Water
- Dish soap
- Fruit and vegetable scraps
- Cooking oil (in small amounts)
- Coffee grounds (in moderation)
What Not to Put Down Your Kitchen Sink
There are also several items that you should avoid putting down your kitchen sink:
- Grease and fat
- Bones
- Eggshells
- Starchy foods (such as potato peels)
- Coffee grounds (in large amounts)
Outbound Link
If you are unsure about whether or not a certain item can be put down your kitchen sink, it is always best to err on the side of caution. You can check out the Garbage Disposal Unit page on Wikipedia for more information on what can and cannot go down your sink.

Protecting Your Plumbing: What to Put (and What Not to Put) Down Your Kitchen Sink
Things You Can Put Down Your Kitchen Sink:
- Liquid soap
- Baking soda and vinegar mixture
- Dishwashing liquid
- Cooking oils and fats (in small quantities)
- Coffee grounds (in small quantities)
- Citrus peels (in small quantities)
Things You Should NOT Put Down Your Kitchen Sink:
- Grease and fat (large quantities)
- Bones and meat scraps
- Pasta and rice
- Eggshells
- Vegetable peels (in large quantities)
- Cleaning chemicals























