I have been using an under-sink system for many years and have experience with purchasing from a great company I am happy to recommend highly. They have been in business for many years and are extremely knowledgeable and helpful. They will guide you with any questions on the filtration and the installation. It's an in-line 4-stage filtration system and quite affordable. Here is a link to the system : https://www.wholesalewatercooler.com/pages/undersink-filter-system