As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
4L LAV LEAKING, UNABLE TO STOP WITH SHUTOFF VALVE. 4L LAV WATER LINE BENEATH WATER HEATER HAD UNCONTROLLABLE WATER LEAK. CLOSED LAV SUPPLY S/O VALVE AND LAV BLOCKED PER MEL 38-30-1B CAT C. INSPECTED AFT CARGO AREA, NO WATER FOUND. R&R WATER HEATER AT 4L LAV PER AMM 38-12-51. "M" PROCEDURES REVERSED. OPS CHECK GOOD. LAV RETURNED TO SERVICE. MEL & PLACARD REMOVED.