The innowave 270H is not an ordinary filter-only device. This system has been designed and engineered to use a combination of technologies to increase the safety and quality of drinking water. The unit combines distillation, carbon filtration and ultraviolet light to reduce contaminants and assure water drinkers that their water is free of the widest possible range of contaminants. The system also features a built-in solid-state computer that monitors water quality by measuring total dissolved solids. If for any reason the water quality doesn1t meet the highest standards, the system automatically shuts itself down.