As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT LOST ALL POTABLE WATER PRESSURE AFTER TAKEOFF. CREW FOUND FAULT LIGHT ON AFT ATTENDANT PANEL FOR COMPRESSOR, CREW SELECTED OVERRIDE BUT NO HELP. ITEM HAS PREVIOUS HISTORY ITEM PLACED ON MEL 3810AN WATER SYSTEM DEFERRED PER THE MEL DDP COMPLIED WITH ACFT OK TO CONTINUE T/S PER FIM 38-10-00-810-814 FOUND VENT VALVE BAD PER STEP C4B2A2. VALVE P/N AV23B3146 M&E 25-3811-9-0009 MX PLACED SYSTEM ON MEL, A/C FERRY FLT TO IAH FOR REPAIR.