Why we should no longer throw the oil from cans of tuna down the kitchen sink? | March 22, 2025

You open a can of tuna, drain the oil… and hey presto, down the sink! A quick and banal gesture, but in reality, a very bad habit. Why? Because this oil has a disastrous impact, both on your pipes and on the environment. Let’s see together why we need to change this habit and what simple alternatives to adopt.
The dangers of tuna oil
Tuna oil: a danger for your pipes

Tuna oil, like any cooking oil, does not dissolve in water. When it is poured down the drain, it can mix with other residue (soap, crumbs, hair) and form a sticky clog. Over time, this deposit builds up and eventually clogs your drains completely, leading to unpleasant odors and costly repairs.

Did you know? One litre of oil can pollute up to 1,000 litres of water and cause blockages in public sewerage systems.

The consequences for your plumbing
If you notice that the water is draining more slowly in the sink or that unpleasant odors are coming from it, it may be a sign that oil has already accumulated. The solutions? Call a plumber (high cost) or use chemical drain cleaners (harmful to the environment).

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