<p>A water purifying device includes a water purifying section (10) for producing purified water by purifying raw water, and an ozone producing section (80) for producing an ozone gas containing a sterilization component. The ozone producing section (80) communicates with an upstream return current path (81) for guiding the ozone gas to an upstream flow path (110) located upstream of the water purifying section (10) and a downstream return current path (82) for guiding the ozone gas to a downstream flow path (120) located downstream of the water purifying section (10).</p>
