Of course you can also treat rainwater to make drinking water. It is recommended to combine a Urspring and a biofilter with AntiTox. Rainwater is very soft water, but it washes the dust out of the air and runs over the roof and the rain gutter over leaves, moss, bird droppings and the materials of the roof when it runs off. Therefore, a consistent removal of pathogens, particles and nanoparticles and dissolved organic ingredients (dissolved organic carbons, DOC) must be ensured.