For daily household tasks such as drinking, washing fruits and vegetables, cooking, bathing or showering, people normally use the water that flows out of the kitchen and bathroom faucets. If you’re one of the many consumers who believe that the water that you use should be fresher, cleaner and with better taste, you should opt for a filtration systemfor water at your home. Finding the best filtration system involves several steps before installing the system. Water filters remove the impurities found on tap water, with carbon or reverse osmosis as the most commonly used system. If you want to know the standards of the carbon filter, refer to the certification by NSF International. NSF refers to National Science Foundation, an agency of the US government.