In a recent article from CBS News it has been note that Mussels off the coast of Seattle are now testing positive for opioids. More and more medications are making their way through us and down the drain back into the water cycle. The H-300- NXT is the first of its kind to be certified by NSF to NSF/ANSI Standard 401, to reduce pharmaceuticals that may be found in your water. These contaminants include: some pharmaceuticals, over-the-counter medications, herbicides, pesticides and chemicals used in manufacturing like bisphenol A (BPA). The Pentair Everpure exclusive precoat filtration technology combines Micro-Pure* and a unique pleated filter membrane that is 30% larger than the H-300 filter. Comparable to our top selling H-300, with added benefits to help give your family peace of mind.