As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED POTABLE WATER QUANTITY DROPPED TO ZERO AFTER TAKEOFF ACCOMPANIED BY AN EXTERNAL AIR NOISE NEXT TO DOOR 2R. FLIGHT DIVERTED TO PIT. INSPECTED AIRCRAFT, FOUND ALL DOORS CLOSED. INSPECTION REVEALED WATER FILL VALVE IN OPEN POSITION. CLOSED SAME. FLIGHT CONTINUED TO LAX. OPERATION CHECKS NORMAL.