Sewage Backups in Atlanta: A Biohazard That Demands Professional Response

Sewage backups are classified as Category 3 black water events — the most serious category of water damage. Sewage contains bacteria, viruses, parasites, and chemical contaminants that pose serious health risks to anyone who comes into contact with it. In Atlanta, sewage backups are more common than most homeowners realize, and the city's aging sewer infrastructure is a primary cause.

Atlanta's sewer system includes miles of aging clay and cast iron pipes that are vulnerable to root intrusion, corrosion, and collapse. When these pipes fail or become blocked, sewage backs up through the lowest drain in the home — typically a basement floor drain, ground-floor toilet, or bathtub. The backup can happen suddenly and without warning, releasing dozens or hundreds of gallons of raw sewage into living spaces.

Heavy rain events compound the problem. Atlanta's combined sewer overflows (CSOs) — where stormwater and sewage share the same pipes — can become overwhelmed during major storms, forcing sewage back into homes through floor drains and sewer connections. This is a known issue in older Atlanta neighborhoods and one that homeowners have little control over.

The health risks from sewage exposure are serious and immediate. E. coli, Salmonella, Hepatitis A, and Norovirus are among the pathogens commonly found in raw sewage. Exposure through skin contact, inhalation of aerosols, or contact with contaminated surfaces can cause serious illness. Children, the elderly, and immunocompromised individuals are at highest risk.