Just be mindful that they are not reusable, when you remove them for a week they grow the stuff inside you wanted to get out. Charcoal just to remove the some of the bad taste. They are good to keep the sediment out of your water lines and stopping up the strainers at your faucets. Will post a filter that is suppose to clean the water, clear the taste, and backflusable for the lifetime you own the filter. Was at the homebuilder's convention 2 weeks ago and got the info. cost a lots I MEAN a lots $650.00. infor to be posted when I get back to the office and folders.