Water occurs naturally but even so cannot be safely used for human consumption without removing many of the trace impurities it collects (passing through the atmosphere and running over and through the earth). These impurities consist of suspended particles such as soil particles, living and dead plant and animal matter (worms, larvae, algae, bacteria etc).
Water utilities collect raw surface or underground water and treat it before putting it into the mains water supply. This treatment ensures that the mains water meets national drinking water regulations. The main method used to treat water before it is added to the mains is to disinfect it with a controlled dose of chlorine. Chlorination is a very effective way of killing bacteria in water — however, many people dislike the taste.
There are many companies providing means of filtering the water at “point of use” (POU) to improve its taste. These nominally take the form of disposable plastic housings containing a filter media — at regular intervals (usually every 6 months), the consumer must discard the filter and replace it with a new cartridge.
The main disadvantage of traditional filtration systems is the environmental impact of disposing of a plastic filter — 6 million plastic filters are thrown away every year. This results in over 1,000 tonnes of plastic being sent to landfill (plastic is non—biodegradable). Manufacture of these housings consumes more than l million units of electricity. The OASIS® Green Filter system is a patented re—usable system. The only part that needs to be discarded is the biodegradable filter media — all of the other parts can be reused over and over again. This results in two main benefits: Filter replacement cost is far lower than with traditional plastic filters Minimal environmental impact