Reverse osmosis and carbon filters are two of the more common household filtration methods available. With reverse osmosis, the water is filtered through a semi-permeable membrane, where the impurities are removed. With carbon filtration, the water passes through layers of carbon where the contaminants are removed. Having a whole house system installed is your best bet for having clean water from every source in the house. With a whole home water filtration system, your plumber will have every point of entry covered, so all faucets produce clean water that is free from impurities.
You can find various water filtration products in most department and hardware stores, and while many are effective, they don’t offer comprehensive results. Point-of-use filters can remove contaminants, but they are only effective in that one spot, and the rest of your house is still getting the contaminants you want to eliminate. Most other products will only give you temporary relief, if any at all. Only a whole-house water filtration system professionally installed after a proper water test will give you the results you need.