Quick answer
Flood cleanup and mold removal in Yonkers usually follows river water: the Saw Mill River and the Bronx River have both pushed several feet of water into basements in recent storms. We pump out, remove soaked finishes, disinfect where storm water carried sewage and dry to readings; national figures put sewage-contaminated water damage at about $7.50 per square foot.
Updated September 2026
Local conditions
What drives mold in Yonkers
Ida dropped about 8 inches of rain on Yonkers in 24 hours in 2021, and the Saw Mill River flooded the Nepperhan Avenue neighborhood with roughly 5 feet of water. Two years later, in the September 29, 2023 storm, water backing up from the Bronx River left 6 to 8 feet in basements near the Sprain Brook Parkway.
Basements that fill that deep lose everything at floor level and most of what is on the walls. The ones that avoid mold afterward are the ones pumped out and opened within the first day or two; basements that were only drained and mopped can still hold water in the walls months later, which shows up first as a smell.
Jobs we do most in Yonkers
After two major floods, these are the jobs Yonkers homeowners and building owners need most.
Flooded Basement Cleanup
Pump-out, tear-out and drying after river flooding.
Sewage Backup Cleanup
Disinfection where storm water carried sewage in.
Basement Mold Removal
Growth behind walls that were drained but never opened.
Water Damage Restoration
Ground-floor walls and floors dried to readings.
Contents Mold Cleaning
Belongings sorted into clean, keep and discard.
Dehumidifier Installation
Drained units that keep a basement dry afterward.
Working in Yonkers after a flood
When the water is deep, safety comes first: power is checked before anyone steps in, and water that came from a river or up a drain is treated as contaminated. Then the pump-out, the tear-out and the drying follow in that order.
We document each room for insurance as we go, and we point out where water got in, whether an entry door, a window well or a floor drain, so the next storm does less damage.
Nearby areas we also cover
Questions from Yonkers
No. River and storm water carries sewage and debris. Keep out and call.
Any drywall the water reached, plus a margin above the wet line, usually comes out.
Yes, if the walls were not opened and dried at the time.
Yes, answered 24/7.