Reverse osmosis and Distillation often strip the water of all it’s vital minerals like calcium, magnesium, etc. which are essential for humans AND can lower the pH value of the water (making it more acidic). AQUASPACE technology while filtering out all the unwanted organic and inorganic chemicals, leaves in the essential minerals and doesn’t lower the pH value. Our filters are designed to allow these minerals to pass through the filter without removal, allowing our customers to drink not only clean water, but HEALTHY water. For the difference between Aquaspace filters and other filters click here.