Where are you actually staying? Do have a confirmed reservation somewhere? I have not heard any specific issues of mold somewhere on the French side, but if for example you are staying at the former Mt. Vernon, it is POSSIBLE there may be mold issues in particular units, as they are all individually owned. If you are going through an agent, ask that specific question about the particular unit that you have in mind, or have reserved. We have stayed now three times since Irma, one at a private villa on the French side and twice at Beachside Villas, and there were no mold issues at either place. As far as the French side water issue, no, you are not supposed to drink the water from the tap. Simple, buy bottled water. SOME places are providing bottled water free with rentals. Ask where you have your reservation and if you don't have a reservation, ask that question before you make the reservation. Honestly, the water situation is a big issue for those living on the French side. (Especially since they are being charged EXTRA and not getting potable water from the tap.) But, for a tourist on a one or two week stay, no biggie. Buy bottled water in the 1.5 liter jugs. I think we got 6 of the 1.5 liter jugs at Super U for something like 4.5 E. Even using bottled water for coffee, we might have gone through 12 bottles, so under $10 in total for our trip, when we stayed at the villa. A non issue.