Why sewage backs up in Franklin homes
The historic homes around downtown and Hincheyville often still drain through cast iron and clay lines that crack, sag and let tree roots in. Newer subdivisions have PVC lines, but grease, wipes and roots still block laterals. During heavy storms, overloaded sewer mains can surcharge and push water back toward the lowest fixture in the house: a basement floor drain, a lower-level shower or a crawlspace cleanout.
- Tree roots in older cast iron and clay laterals
- Grease and wipes blocking the main line
- Storm surcharges in the public sewer
- Failed ejector pumps in basement bathrooms
The Category 3 protocol
Sewage backup is Category 3 the moment it happens, and porous materials touched by Category 3 water get removed, not dried. The mitigation team sets containment with plastic sheeting and negative air, wears PPE (respirators, gloves, suits and boots), and runs HEPA air scrubbers to keep contaminants out of the rest of the house. The extraction crew removes the water and solids, then carpet, pad, drywall above the wet line, insulation and crawlspace vapor barrier touched by the sewage are bagged and removed.
Hard surfaces are cleaned and then treated with an EPA-registered antimicrobial at its label dwell time before any drying starts. The CDC sanitation guidance explains the health risks of wastewater exposure.
A backwater valve on the sewer lateral stops the public sewer from pushing water back into the house. A plumber can tell you if your home has one.
Drying and the claim
After removal and cleaning, the drying team dries the structure to the drying goal with daily readings. The claim file carries photos taken before removal, the removal list, the antimicrobial record and the drying logs. Many policies need a water backup endorsement for sewage losses. Flood water from outside is covered on flash flood cleanup, and a flooded lower level on basement flooding cleanup. EPA information on sanitary sewer overflows covers why sewers back up.