AFM® is an inert, amorphous aluminosilicate (glass) manufactured by up-cycling post-consumer green and brown glass bottles. Activated Filter Media AFM® is verified to at least double the performance of sand filters without the need for additional investments in infrastructure. AFM® is used in single or dual media filtration in both open (RGF) and closed (pressure) filters for treatment of various sources of water such as ground water, surface water, seawater and waste water.