I do not own a Trek, but the Bosch e-systems are well tested. They come from Europe, after all, and were designed by and for Europeans who ride more for transportation than Americans. That's why European bikes frequently come equipped with mudguards, racks, lights, bell, kickstand, etc. They are made to be used every day, not just on weekends in good weather. All this is to say that if Trek...or any other big manufacturer's e-bikes...were no good around water, we'd have heard about it.