The Water Polisher is an advanced storm water treatment system utilizing an upflow media filter with built-in pretreatment. This patented design provides double-chambered separation to remove large to fine sediments from storm water runoff. This configuration prevents clogging challenges found in downward flow media filters. Backed by an 8-year unlimited warranty, the up flow filter assembly is constructed with 100% high grade stainless steel for superior durability and longevity.