Mission Filtration is a partner-company under the Filter Services Inc brand. FSI is headquartered out of Elk Grove, IL. Mission Filtration (based out of in Indianapolis, IN) is the leading full-line filtration products and services distributor for the state of Indiana. Our filtration specialists are Nationally Certified, with the goal of providing a solution that improves (and saves) your: health, time, resources, and optimizes your total cost of ownership.