Most machines that have the ability to pick up water will clearly show this on the machine, such as “Wet/dry Vac”, etc. Typically, wet/dry machines are canister style with the motor that lifts off the top of the canister and some type of float mechanism under the motor (to stop excessive filling). If you are unsure, please contact us to verify this. (1-888-875-1726) If you use a dry only machine to pick up water, it will almost certainly damage your machine and could be dangerous to you.