The Aquasana AQ-5200 is a 2-stage under-sink filtration system that removes up to 99% of contaminants like lead, chlorine, and mercury while keeping healthy minerals in your water. It uses advanced sub-micron filtration, catalytic carbon, and ion exchange technology, and is WQA tested for top performance. The system provides a fast flow rate of half a gallon per minute, with filters lasting 6 months or 500 gallons. Easy to install and maintain, filter replacements are quick, and the unit offers cost-effective, clean water at less than 10 cents per gallon.