Have an eternally damp stone cellar (old house). Have tried improving ventilation, tonnes of those mini plastic dehumidifiers, etc. In the end i just bought a proper dehumidifier and ran it for 2 weeks. The cellar was finally, properly feeling dry.
Then, tonight, the washing machine went on... and the pump (which pumps water up and out)... had been accidentally turned off.
So approx 40l of water have come back through the pump pipework then first drained into my cellar, then down through the gaps between the stone flags in the floor.
I’ve put the dehumidifier back on, and mopped up what water hadn’t just sunk into the stone etc. (Not v much 
) - can or should I do anything else to dry it out? Should I worry about the water that ran under the washer damaging it?
Really annoyed that I didn’t check the pump... but it’s never switched off! Not sure why it was tonight!
Gah!