Sewer Gas Smell: 8 Common Causes (& When To Call for Help)

Sewer gas smells like rotten eggs and can indicate plumbing issues, potentially posing health risks if exposure is prolonged or in high concentrations. Identifying and addressing the source of the smell is crucial for ensuring safety and eliminating odors. Common causes include dry water traps, damaged sewer vents or lines, sewer line backups, wax ring leakage, incorrectly installed plumbing fixtures, blocked drains or vents, broken clean-out caps, and residual odor from sewage backups. While some issues can be resolved with DIY methods, professional restoration services may be necessary for more serious problems.