Purestream provides wastewater treatment equipment. Founded in 1971, products offered include filter media, industrial water filters, strainers, filtration equipment, stainless steel microscreen drum filters, screw screens, sand separators & more. User-friendly In-Eko Microscreen Drum Filters are compact & provide tertiary treatment and can be installed in a concrete channel with low horsepower requirements as well. The In-Eko Screw Screen is used for lower flow applications and is available in standard or custom sizes. For advanced wastewater treatment try the Purestream ES, LLC BESST®.