A water purification system comprising: a cylindrical chamber comprising inlet and outlet for flowing incoming and outgoing air into said chamber and out of said chamber and into a water-containing tank; at least one elongated UV radiation lamp located at center of said cylindrical chamber; at least one pair of magnetic rings (15a, 15b, 15c); an air compressor, air pipes for introducing said air gas into said chamber and output air pipe for introducing said modified air gas into said water-containing tank; a prefilter attached to said air compressor and located before inlet of said chamber; and a skeleton configured for occupying center volume of said chamber from top to bottom around central longitudinal axis of said chamber, said skeleton comprising inner space for accommodating said at least one UV radiation lamp and at least one pair of holding elements (10a, 10b, 10c) for holding said at least one pair of magnetic rings (15a, 15b, 15c) around said at least one UV radiation lamp, wherein inner diameter of bases of (17b, 17c) of said skeleton is smaller than inner diameter of a housing sleeve, said housing sleeve is connected at opposite ends to top and bottom covers, said top and bottom covers are provided each with respective central holes (11a, 12a), and wherein every pair of magnetic rings (15e, 15f) generates a local magnetic field upon placing said pairs of magnetic rings (15e, 15f) on said holding elements (10a, 10b, 10c) of said skeleton, said local magnetic field does not overlap or at least minimally interfere with a local magnetic field generated by a neighbor pair of magnetic rings (15e, 15f), wherein said purification system comprises concentric configuration to minimally perturb profile and distribution of said incoming and outgoing air, said at least one pair of magnetic rings (15a, 15b, 15c) are positioned in parallel relative each other and configured to induce maximal concentric magnetic flux field on molecules of said flowing incoming and outgoing air. a cylindrical chamber comprising inlet and outlet for flowing incoming and outgoing air into said chamber and out of said chamber and into a water-containing tank; at least one elongated UV radiation lamp located at center of said cylindrical chamber; at least one pair of magnetic rings (15a, 15b, 15c); an air compressor, air pipes for introducing said air gas into said chamber and output air pipe for introducing said modified air gas into said water-containing tank; a prefilter attached to said air compressor and located before inlet of said chamber; and a skeleton configured for occupying center volume of said chamber from top to bottom around central longitudinal axis of said chamber, said skeleton comprising inner space for accommodating said at least one UV radiation lamp and at least one pair of holding elements (10a, 10b, 10c) for holding said at least one pair of magnetic rings (15a, 15b, 15c) around said at least one UV radiation lamp, wherein inner diameter of bases of (17b, 17c) of said skeleton is smaller than inner diameter of a housing sleeve, said housing sleeve is connected at opposite ends to top and bottom covers, said top and bottom covers are provided each with respective central holes (11a, 12a), and wherein every pair of magnetic rings (15e, 15f) generates a local magnetic field upon placing said pairs of magnetic rings (15e, 15f) on said holding elements (10a, 10b, 10c) of said skeleton, said local magnetic field does not overlap or at least minimally interfere with a local magnetic field generated by a neighbor pair of magnetic rings (15e, 15f), wherein said purification system comprises concentric configuration to minimally perturb profile and distribution of said incoming and outgoing air, said at least one pair of magnetic rings (15a, 15b, 15c) are positioned in parallel relative each other and configured to induce maximal concentric magnetic flux field on molecules of said flowing incoming and outgoing air.