From the Manufacturer:

Do you know the quality of your water? The look, taste and smell of water are only the superficial indicators of quality. There are a number of problems that can affect your water that are completely invisible. Pentair Residential Filtration is proud to offer the OMNIFilter product line, which effectively reduces rust, sediment, chlorine, odors and other invisible substances that may be present in your household water- providing clean, great tasting water throughout your home. At Pentair Residential Filtration, clean water is our business. for more than 35 years, the OMNIFilter brand has been a leader in water filtration. for filtered water anywhere in your home, the OMNIFilter product line offers a product that will fit your needs. Having clean water in your home has multiple benefits: reducing unwanted tastes, odors, and sediment, improving water clarity and color and extending the life of your household appliances. Even better, OMNIFilter products are affordable, effective and easy to install. OMNIFilter products are the water filters for the "do-it-yourself-er" providing safe, clean, good tasting water at a fraction of the cost of bottled water.