As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT ATTENDANTS REPORT FWD LAV WATER HEATER OVERHEATING FOLLOWED BY FWD LAV SMOKE ALARM. NO SMOKE OR VAPING REPORTED. WATER HEATER WAS TURNED OFF AS A PRECAUTION / [01] OK TO CONTINUE PER MEL 38-2-02 SP1B. WATER HEATER OFF. LAV INOP;[02] REMOVED AND REPLACED FWD LAV WATER HEATER PER AMM 38-13-01