Senior Design Capstone Project - This is a water filtration system with a slow sand filter and a UV reactor. The sand filter is a tried and true method of removing particulates from water, and the UV reactor is proven to remove harmful pathogens. The filter uses LEDs, which are much more efficient and less toxic than traditional mercury bulbs. Previously, the limiting factor for using LEDs in the field has been cost, but recently LEDs have become less expensive by an order of magnitude, and their price will only continue to drop. This not only allows our product to be safe and inexpensive, but also will reduce future production costs.