A.S. Filtration | 203 followers on LinkedIn. Offering innovative water filtration solutions tailored to your specific needs. | Franklin TN-based A.S. Filtration™ manufactures unique antimicrobial filter media that clean and treat water by removing solids and bacteria, including Legionella and coliform, in industrial, commercial and stormwater applications – without chemicals or hazardous byproducts. A.S.