Whole House Water Filter System, City or Municipal Water – Coconut Shell Carbon. The item “Whole House Water Filter System, City or Municipal Water Coconut Shell Carbon” is in sale since Monday, September 13, 2021. This item is in the category “Home & Garden\Kitchen, Dining & Bar\Small Kitchen Appliances\Water Purification\Water Filters”. The seller is “thefiltershoppe” and is located in Cypress, California. This item can be shipped to United States.