EE WENT TO SEE IF HE NEEDED TO ADD ANY BROMINE TO THE TANK. HE TURNED OFF THE WATER VALVE THINKING BOTH VALVES WERE 1/4 TURN OPEN. HE TRIED TO TAKE THE LID OFF, HEARD A POP AND WAS HIT IN THE FACE WITH THE WRENCH HE WAS USING. HE WAS TAKEN TO THE E.R. WHER HE WAS TREATED FOR SEVERE LACERATION TO HIS CHIN, FRACTURE TO THE JAW, EXTENSIVE DENTAL TRAUMA.