As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: FA NOTIFIED FLIGHT DECK THEY HAD ZERO POTABLE WATER UPON REACHING CRUISE. I HAD THEM TRY TO FLUSH TOILETS AND USE SINK, STILL ZERO WATER AVAILABLE. ALSO ZERO WATER AVAILABLE IN EITHER GALLEY. DECESION MADE TO RETURN TO CLT EMERGENCY DECLARED AND AIRCRAFT LANDED OVERWIGHT WITHOUT INCIDENT. MAINTENANCE VERIFIED WATER SERVICING BY RAMP IAW AMM 12-14-01.