Share your experience!
Contact your local Xperia care @areebkhan46 and request a vacuum test
http://support.sonymobile.com/global-en/contactUs/
There are only two ways the water leaked in
1. manufacture issue
2. you didn't firmly closed the covers and/or there's physical damage on the phone, perhaps cracked screen, cracked back panel, cracked housing.
@areebkhan46