The Puronics Hydronex iGen B whole-house water softener and Bacteriostatic filter system provides superior quality water by incorporating the most technologically advanced equipment available, the company says. SilverShield HYgene filter incorporates NASA technology, inhibiting growth of bacteria within the filter media bed. The intelligent iGen valve monitors water usage, optimizing efficiency and alerting the homeowner when the filter needs to be changed. The multi-layered filter media tank combines an outer cover of stainless steel with the durability and protection of two additional layers. The system carries the WQA Gold Seal for certification according to NSF/ANSI standards and is EPA registered. Puronics.