Sewer Gas in Your Home: Risks and What to Do
Sewer gas is a general term for gases that can build up when wastewater lines, drains, or vents don’t function properly. It may smell like rotten eggs, a strong “sewage” odor, or even fuel-like fumes. While some incidents are minor and fixable—such as a dry drain trap—others can point to conditions that are hazardous to health or require urgent attention.
Because sewer gas contains potentially toxic and flammable components, it’s important to treat unusual odors as a warning sign, not just a nuisance.
What sewer gas is and where it comes from
In properly functioning plumbing systems, wastewater flows away and gases are safely vented outdoors. Sewer gas may enter your home when water seals in drains (called trap water) evaporate, fixtures are rarely used, vents are blocked, plumbing is damaged, or a sewer line backup forces gases into living spaces. Common sources include floo ... Read more »
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