Whole House Bag Filter Tank Filteration System (20-Inch) Bag water filter treatment is when one or more bag filters are placed inside a bag filter housing to remove suspended solids from water. Specific bag filters vary depending on the industry in which they are used. This filtration method is both versatile and cost-effective for filtering lots of water quickly. They’re great for reducing the amount of silt, sand, dirt and other types of sediment in your water. Bag water filter treatment is an efficient method to reduce particles in large volumes of water at a high flow rate. Other filtration methods are not as cost-effective for such high volumes of water. Bag water filters are a great option for industrial applications, brewing, pre-filtering, and more. Think of bag water filter treatment as a way to remove the big stuff in a large volume, high flow rate of water. 20 Inch Bag Filter 20 Inch by 4 inch Water Bag Filter (5 Micron) A good application example for a bag water filter system would be if you get your water from a well and lived on a farm needing a lot of water for the farm and your personal use. A bag water filter system is suited for this application because the bag filter would filter out particles, sticks, chunks, etc. from your water which could clog pipes, sprinklers. It was a cost-effective method.