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Toxic Sewer Gases and your Plumbing System

Typical Venting System for Residential Plumbing. Newer style shows use of Air Admittance Valves or AAVs rather than multiple roof penetrations. What is sewer gas? Sewer gas is a byproduct of the breakdown of natural human waste. It comprises a mixture of gases, including hydrogen sulfide, ammonia, and more. The hydrogen sulfide in sewer gas […]