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Expert Advice from CDL Plumbing & Drainage on What Not to Pour Down Your Drains and Sinks

As homeowners, we often take our drains for granted, pouring all sorts of substances down the sink without considering the potential consequences. However, improper disposal of certain materials can lead to clogged pipes, unpleasant odours, and costly plumbing repairs. In this article, we'll explore CDL’s list of what not to pour down your sink, and provide essential tips for proper drain maintenance. If you're a resident of Newcastle, trust CDL Plumbing & Drainage, your local plumbing experts, to keep your drains in optimal condition.

The Importance of Drain Maintenance

Proper drain and plumbing maintenance is crucial for preventing clogs and ensuring the smooth operation of your plumbing system. Neglecting this essential task can result in blocked drains, water backups, and potential damage to your pipes. By adopting a proactive approach, you can save yourself from the inconvenience and expense of dealing with a plumbing emergency by having to call your local plumbers.


Avoid Pouring These Into Sinks and Drains:

The below list is also similar to what not to flush down your toilets:

Fats, Oils, and Grease (FOG)

One of the primary culprits behind clogged drains is the improper disposal of fats, oils, and grease, collectively known as FOG. These substances solidify as they cool, causing blockages in your pipes over time. Instead of pouring FOG down the sink, let them solidify and dispose of them in the trash. This simple habit can go a long way in maintaining a clear and functional drain.

Coffee Grounds

While it may seem convenient to wash coffee grounds down the sink, they can accumulate and create blockages. Instead, consider composting or discarding them in the trash. Coffee grounds are great for your garden or compost heap, but they should never find their way into your drains.

Starchy Foods

Potato peels, rice, pasta, and other starchy foods should not be disposed of through the sink. When mixed with water, they can create a gummy substance that clings to the walls of your pipes, leading to blockages. Always dispose of starchy foods in the trash or compost bin to keep your drains free-flowing.


Eggshells, despite their fragile appearance, can cause significant problems for your drains. The thin membrane inside the shell can wrap around the blades of your garbage disposal or form a paste-like substance when ground up. It's best to dispose of eggshells in the trash or add them to your compost rather than risk clogging your pipes.

Chemical Cleaners

While it's tempting to use chemical drain cleaners to address minor clogs, these products can do more harm than good. They often contain harsh chemicals that can corrode your pipes, leading to leaks and other plumbing issues. Instead, consider using natural alternatives like baking soda and vinegar or calling a professional plumber like CDL Plumb Drain Gas to tackle stubborn clogs.

Hair and Personal Care Products

Hair is a common culprit when it comes to clogged bathroom drains. To prevent hair blockages, use drain covers or traps to catch loose hair before it goes down the drain. Additionally, avoid pouring excessive amounts of personal care products like shampoo, conditioner, and lotions down the sink, as they can contribute to build-up and clogs.

In Summary

By being mindful of what you pour down your sink (or toilet), you can maintain a healthy plumbing system and avoid unnecessary plumbing repairs. Remember to avoid pouring fats, oils, and grease, coffee grounds, starchy foods, eggshells, and chemical cleaners down your drains. Instead, adopt eco-friendly disposal methods and enlist the services of a professional plumber like CDL Plumbing & Drainage for any plumbing concerns in Newcastle or Lake Macquarie. With proper drain maintenance, you can ensure the longevity of your plumbing system.

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CDL Plumbing & Drainage are expert plumbers and gas fitters servicing Newcastle & Lake Macquarie from our Gateshead HQ. We have over 15 years of experience and specialise in all domestic and commercial plumbing, able to take on large-scale drainage projects. Fully qualified (Level 4), licensed & insured with free quotes. We have 2 teams of friendly and reliable plumbers with fully equipped vans.

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