For pure water straight from the hose, there's the GoGreen Garden Hose Water Filter. GoGreen uses environmentally friendly green coconut carbon and KDF55 filtering media to dramatically reduce chlorine, chemicals, sediments, Iron and metallic particles for healthier soils, and better tasting water. Invigorates compost, bio-teas, and soil amendments. Works great for washing cars too. With a life of 8,000 gallons, the filter features a customizable flow restrictor capable of 2 gallons per minute.