The H1-46SED system is designed for filtration on more of a raw water supply. This can include the sediment filtration of dam, creek or river water for in home use or utility use. It is also able to suit tank water application where the tanks may have heavy levels of sediment due to either the age of the tank or lack of protective gutter devices to pre-screen water into a tank. With the combination of a pleated washable and re-usable cartridge along with the gradient spun cartridge, these offer the best solution for sediment filtration where no chemicals are known to be in the water or are not an issue.