Why Does My Water Smell Like Rotten Eggs at Home

If your tap water smells like rotten eggs, it can be alarming and unpleasant. Many homeowners in Collingwood and the Central Ontario area notice this sulfur-like odour coming from their faucets.

The smell is usually related to hydrogen sulfide gas in the water supply, but there can be multiple underlying reasons depending on your plumbing system and water source.

What Causes the Rotten Egg Smell in Water?

The most common cause is hydrogen sulfide gas, naturally produced by sulfur-reducing bacteria that can be present in groundwater, wells, or plumbing systems.

Common Sources of Sulfur Smell

Well Water Contamination Homes that rely on well water are more likely to experience sulfur odours.

Water Heater Issues Sometimes the smell is only noticeable when using hot water, indicating a problem inside the water heater.

Plumbing System Bacteria Bacteria can grow inside pipes, drains, or fixtures, especially if water sits unused for long periods. This is common in seasonal properties around Central Ontario.

When to Call a Professional Plumber

Persistent or strong smells should always be inspected by a professional. Contact a plumber if the smell continues after flushing water, the odour is present in both hot and cold water, or you notice discoloured water.