Abstract: A water purification device for attachment to a hose or other water supply such that water flowing through the device comes in intimate contact with a treatment media including free available silver ions to provide a anti-bacteria and germicide treatment of the water flowing therethrough. Preferably, the device includes an inner chamber having opposed pairs of shells, and treatment media is disposed in at least one of such shells.

Abstract: A device for treating water within a swimming pool wherein a portion of such water is diverted to the device. The device utilizes a canister in which dissimilar metals preferably silver and copper are positioned such that the water passing between them acts as a conductor and establishes a voltaic cell whereby the metals are eroded so as to supply the water with an effective level of silver and copper ions. Such metal ions effectively act as germicides and algaecides.

Abstract: A water purification system for use with a pool or the like in which a small quantity of water can be continually withdrawn from the pool for recycling. The system involves the use of silver impregnated activated charcoal granules as a combination filter and antimicrobial agent such that the need for chlorine and other conventional chemical treatment of the pool is eliminated or vastly diminished. A small portion of the water being recycled is diverted and so treated with the silver impregnated activated charcoal such that small amounts of silver ions are released into the water such that the silver concentration in the pool is maintained at a level effective to kill essentially all bacteria present therein.