hydrophobe

A hydrophobic compound or material.

Someone who is affected by hydrophobia (a fear or aversion to water).

The shock of the meeting triremes was tremendous, and in a moment the poor little hydrophobes were spluttering in the pond: […]

If I talk to 10 people, there is usually a fellow hydrophobe among them. It is hard to pick them out, because a person who is afraid of water looks very much like a normal person. But, from talking with fellow hydrophobes, I have discovered something we almost all share: more times than not, our fear of water stems from one intensely bad experience that came during our childhoods.