Willow water sparkling water glass 750ml the secrets in the source just below the surface of the cartmel fell in the unspoilt natural beauty of the english lake district lies a layer of peat formed from the remains of an ancient willow forest as rain water travels through the peat it absorbs salicin found in many beauty products for the skin the water is then filtered through limestone adding significant calcium content it is this that makes willow water a great way to stay hydrated wi