Okanapure Water outfits homes and offices with BPA-free 18.9-litre bottles of crisp purified water. The aqua-mongers filter the water through a multistep reverse-osmosis process, and its Alkaline pH Plus H2O comes bursting with minerals such as calcium, potassium, and magnesium to help stave off maladies. The staff picks up spent bottles for sanitization and reuse, preventing the tremendous amount of waste that comes from throwing away 500-millilitre bottles or the mink vases filled with rainwater after a single use.