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Glam Journal

Why does my kitchen sink smell like sewage?

Author

James Austin

Updated on April 06, 2026

Why does my kitchen sink smell like sewage?

There are two main reasons why your kitchen drain may smell: A build-up of food and debris in the drainpipe. Anything you put down your sink other than water can stick to the sides of the pipes or sit in the U-bend. And over time, bacteria will cause it to decay and smell.

Why does one of my sinks smell like rotten eggs?

A smelly sink is usually caused by bacteria build up from grease, fat and food which have been flushed down the drain. These will then get stuck in the pipes causing the familiar rotten egg smell.

Is it safe to pour bleach down the drain?

Pour bleach into them Bleach is a powerful, toxic substance that should be used carefully and properly, and pouring it down a drain is not a proper use. Bleach can react with other substances in your pipes, potentially release fumes, and further plug up the system.

Why does my Kitchen Sink smell like sewer gas?

Luckily, the fix for that is easy: just run some water down the drain. The drain vent You could have a perfectly functioning trap and still smell sewer gas. That’s because the pressure in the sewer fluctuates. High pressure can force its way through the water in the trap and low pressure can siphon out the water from the trap.

Why is the water pressure in my Kitchen sink so low?

A kinked water supply hose would reduce the water pressure considerably. But unkinking it should immediately restore the water pressure. Make sure the hoses are unkinked and away from objects, then try the faucet again. Another possible problem that can cause low water pressure in kitchen sink faucets is a clogged aerator.

Why does my water smell when I Turn on the faucet?

The sewage smell you’re experiencing can be caused by several factors. It could be the bacteria left by food and soap in your drain. The scent from the bacteria is actually a gas that originates in the drain and makes its way up to the faucet resulting in your water acquiring a dirty smell.

Why is my kitchen faucet not working properly?

The water pipe that leads to your kitchen faucet could have debris, mineral buildup, or sediment preventing the normal flow of water. If there are leaks in the pipe, the water flow won’t be as strong because much of the water will be lost through the leak. A plumber can inspect and fix your clogged or leaky pipes.

Luckily, the fix for that is easy: just run some water down the drain. The drain vent You could have a perfectly functioning trap and still smell sewer gas. That’s because the pressure in the sewer fluctuates. High pressure can force its way through the water in the trap and low pressure can siphon out the water from the trap.

What causes low hot water pressure in kitchen sink only?

If this is the case, the issue will not be isolated to your kitchen, but seen across the home and in both hot and cold faucets; the more taps you have on, the lower the pressure. This is because the distribution of the water reduces the pressure across the whole house.

The sewage smell you’re experiencing can be caused by several factors. It could be the bacteria left by food and soap in your drain. The scent from the bacteria is actually a gas that originates in the drain and makes its way up to the faucet resulting in your water acquiring a dirty smell.

Why does my hot water smell so bad?

Frequently, this occurs if the hot water is unused, if the water heater is turned off for a long period of time, or if the thermostat on the heater is set too low. Generally, the bacteria that produce this problem are not a health threat, however, the taste and odor can be very unpleasant.