What Causes Plumbing Odours?

Understanding the root cause of plumbing odours is key to getting rid of them for good. Here are some of the most common culprits:

1. Bacteria Growth: Your drains are an ideal breeding ground for bacteria. Organic material like food scraps, grease, hair, and soap can get caught in your pipes. Over time, bacteria feast on this buildup, leading to unpleasant smells. You might first notice these odours in one room, but if left unchecked, they can spread throughout your home.
2. Plumbing Installation Issues: Poor plumbing installation can also lead to odours. Missing or malfunctioning drain traps, improperly installed vents, or the use of substandard materials can all cause sewage gases or other smells to leak into your living space. If your home has a history of plumbing problems, this may be worth investigating.
3. Clogged Drains: Blockages in your plumbing are often behind those nasty odours. If your sink or shower drains are slow, or if you see water pooling, there’s a good chance something is stuck in your pipes. Left untreated, this can cause more than just bad smells; it can lead to leaks, flooding, or pipe damage.
4. Sewer Gas Leaks: If you detect a sewage-like odour, it could be due to sewer gases escaping through dry or damaged drain traps. This is particularly common in drains that are seldom used, like those in guest bathrooms or utility rooms.
5. Mould and Mildew: Areas around your pipes are often damp, dark, and a perfect environment for mould and mildew to thrive. Leaky pipes or condensation can cause mould to grow, resulting in musty odours and even health risks if left unaddressed.

How to Get Rid of Plumbing Odours

Now that you know what’s causing those foul smells, let’s explore some tried-and-true methods to eliminate them:

1. Boiling Water: An easy and effective method is to pour boiling water down the affected drain. This can help to loosen food particles and grease, flush away bacteria, and reduce odours. To keep your pipes clear, you can repeat this treatment weekly.
2. Baking Soda and Vinegar: One of the best natural cleaners, baking soda, can neutralize odours in your drains. Try pouring a cup of baking soda down the drain, followed by a cup of boiling water. For an extra boost, follow it with a cup of vinegar. The chemical reaction between the vinegar and baking soda helps to break down buildup in your pipes. After ten minutes, flush the drain with hot water.
3. Use a Drain Snake: If the smell persists, a drain snake might be necessary to clear the clog. However, using a drain snake improperly can damage your pipes, so it’s often best to leave this task to a professional. Doug the Plumber has specialized equipment to remove even the most stubborn blockages without harming your plumbing system.
4. Adjust the Water Level in Your Drain Trap: If you’re noticing a sewer-like smell, the water in your drain trap might have evaporated. Simply pour four cups of water into the drain, followed by three or four tablespoons of oil. The oil will prevent the water from evaporating too quickly, ensuring the trap stays filled and odours remain blocked.
5. Mould and Mildew Inspection: If you suspect mould, it’s important to have your plumbing system inspected by a professional. Leaky pipes or poor insulation can lead to moisture buildup, which will cause mould to grow over time. Addressing this issue early can prevent costly repairs down the road and eliminate persistent musty smells.