Water conditions can vary even in the same community. The Aqua Science High Performance Drinking Water System can be configured to meet your specific requirements. There are 10 interchangeable filters with a variety of treatment options that can be tailored to local water conditions, so your water is the best it can be. https://www.aquascience.net/products/cartridge-filters-housings-reverse-osmosis-uv-sterilization/reverse-osmosis/aqua-science-quick-change-75-gpd-reverse-osmosis-high-performance-drinking-water-system