Health and safety risks

Homeowners need to be careful that their homes didn't suffer any structural damage before entering them. They should also be cautious around standing water near power sources, regardless of whether the power has gone out. Third, they should make sure their air conditioners are free of water before turning them back on.

"That could cause more damage to it, or to you -- if you're standing too close to it," said MacDonald.

MacDonald also encouraged homeowners to get everything that's wet out of the house to avoid mold and mildew. That includes carpeting, wall boards and the insulation behind it. Don't risk salvaging material that looks dry but is located in a wet environment. Hidden water could still cause mold.