A water preconditioning system is provided. The system includes a circulating tank configured to receive therein water, an ozone machine in fluid communication with the circulating tank and configured to add ozone to the water as the water circulates through the ozone machine, and a magnetic structuring stage in fluid communication with the ozone machine. The water preconditioning system outputs water preconditioned for electrolysis. The system may be utilized as part of a system for producing and tuning super-oxygenated and structured water.