EE WAS WASHING COMPANY DRILL, DM45, USING A HOT WATER HIGH PRESSURE DEVICE. HE DROPPED THE WAND TO RETRIEVE MORE HOSE WHEN THE WAND HIT THE GROUND. HOT PRESSURIZED WATER SPRAYED THE BACK OF HI S LEFT LEG AT THE ANKLE LEAVING HIM WITH SMALL TOPICAL BLISTERS. DRESSED WITH COMMON FIRST-AID SUPPLIES AND VOLUNTARILY RETURNED TO WORK.