Sewer gas testing is the process of identifying and locating leaks in a building’s plumbing system that allow noxious gases—such as hydrogen sulfide, methane, and ammonia—to enter occupied spaces. These gases, often originating from decomposing organic matter in sewer lines, can pose health risks and cause unpleasant odors. Common symptoms of exposure include headaches, nausea, dizziness, and respiratory irritation. Testing is typically prompted by foul odors, complaints of indoor air quality issues, or suspicions of compromised plumbing systems.
The most common method for detecting sewer gas leaks is a smoke test, where non-toxic smoke is introduced into the plumbing system under slight pressure. Any leaks or faulty seals will cause the smoke to escape, making them visible to the inspector. Other methods include gas detection sensors or tracer gas tests, which can pinpoint even small leaks. Accurate testing helps identify the source of contamination and guides necessary repairs, ensuring a safe and odor-free environment.