My recommendation is go to a shelter first.

However, here are the breeds that like or have a fascination with water:

Turkish Vans, maine coons, abysinnians, tuxies (well the ones I have met anyway) all have a fascination with water.

Though most of these cats bar the maine coons and tuxies are independent and are not prone to being lap cats but are highly affectionate and hyperactive.

Make sure you thouroughly check the breeder out and the types of genetic illnesses that purebreds can get before you go and purchase. If you can get an older *retired* cat from a breeder. They make marvelous pets!