The 24 to 48 hour window
The EPA advises drying water damaged areas and items within 24 to 48 hours to help prevent mold growth. That window is the single most useful number for anyone staring at a wet carpet.
After that point, carpet pad in particular becomes much harder to save.
Safe first steps
Stop the water if you can do it safely, for example by closing a supply valve. Keep away from standing water near outlets, cords, or appliances. If water is near electrical sources, do not enter the area.
Move furniture and valuables off the wet carpet. Photograph the room before anything else is moved, which can help with insurance conversations.
Know what kind of water it is
Clean water from a supply line is very different from water from a toilet overflow, sewer backup, or flood. Contaminated water generally means carpet and pad should not be kept, regardless of how quickly they are dried.
If you are not sure what kind of water it was, treat it with caution.
Things to avoid
Avoid walking across saturated carpet repeatedly, which pushes water deeper into the pad. Avoid using household vacuums on wet carpet. If there is already visible mold, avoid pointing fans at it, which can spread spores.
Avoid simply laying towels and waiting. Pad can stay wet underneath long after the surface feels dry.
When wet becomes moldy
Signs that the window has passed include a musty smell, discoloration on the backing, or pad that remains damp after several days. At that point, the conversation shifts from drying to carpet mold removal.
Call (855) 661 4275 during business hours to describe what happened and confirm availability for your location.
This guide is general information about carpet mold based on publicly available EPA guidance. It is not a substitute for an assessment of your property or medical advice.