Rioolbackups

Rioolbackups, or sewer backups, describe wastewater flowing back into a building when the public sewer system is overwhelmed, damaged, or when internal plumbing fails. They create health risks and can cause property damage through contaminated water, foul odors, and mold.

Causes include blockages in the main sewer line or building lateral, often from grease, fats, damp wipes, or feminine hygiene products; intrusion by tree roots; heavy rainfall or sewer surcharge; and pipes that are cracked or collapsing. Aging infrastructure and combined sewer systems increase risk.

Signs are slow draining, gurgling toilets, sewage odors, water pooling in basements or floor drains, and multiple fixtures backing up.

Prevention emphasizes maintenance and proper waste disposal. Regular drain cleaning, installing screens to catch debris, and keeping cleanouts accessible help. Backflow prevention devices, such as backwater valves, should be installed on building sewer lines where feasible. A sump pump with an annual check valve can aid in flood-prone areas.

Response to a backup should prioritize safety and rapid containment. Do not flush or use water in affected areas; avoid direct contact with sewage; turn off electrical devices in flooded zones if safe. Contact the municipal sewer utility and a licensed plumber. Document damage for insurance and remediation.

Insurance and costs vary by policy and region; cleanup and restoration can be significant. Local codes may require backflow prevention and proper drainage design to mitigate future backups.