Employee was turning on a 2 inch water hose to start washing off the cathodes and anodes, when EE turned on the water hose, it was more pressure than EE expected. It sprayed into the tank of electrolyte and caused a splash back on to EE's face with a small amount of water to EE's forehead. The mixture of electrolyte, sweat and water got into EE's eyes. EE was wearing PPE.