Why is there water leaking or flowing inside the Coway Aquamega? Chuck Updated May 23, 2018 16:04 The connection valve may be closed. The connection valve must be locked to prevent leaks. If it is locked, but the filter is still leaking, call Toll Free Customer Service 1-800-285-0982. Related articles Why does my water look murky if I just replaced the filter? Why is the water flow so slow? Why doesn’t water come out of my Coway Aquamega? Why does my water taste bad?