The question of water into the eyes after epi-lasik is a common one. In general, once your eyes are comfortable, and the bandage contact lenses have been removed, most patients are fine to have casual contact with water again.
Do be careful though as the epithelium is just recovering from surgery, that you don't irritate the eye, nor rub it too vigorously as this may disrupt the covering epithelium over the eye.
Congratulations on your recent surgery!
ESG