Ask This Old House plumbing and heating expert Richard Trethewey improves the taste and odor of municipal drinking water with a whole house filtration system that includes a sediment filter and a granulated activated carbon filter. SUBSCRIBE to This Old House: http://bit.ly/SubscribeThisOldHouse Time: 2-3 hours Cost: $1,000 Skill Level: Moderate Tools List: Tubing Cutter Fitting…