PhosphoSorb® Media Achieves a General Use Level Designation from the Washington State Department of Ecology

West Chester, OH – West Chester-based Contech Engineered Solutions announced today that the Stormwater Management StormFilter® (StormFilter) with PhosphoSorb® media has achieved a General Use Level Designation (GULD) for Basic (TSS) and Phosphorus treatment from Washington State Department of Ecology.

The StormFilter was the first technology to receive a General Use Level Designation for Basic Treatment using ZPG™ media. The innovative PhosphoSorb media has been researched and engineered by Contech to achieve the highest phosphorus removal from a proprietary system in Washington State’s field evaluation program.

“Contech is excited to announce another field-proven, phosphorus treatment solution that can provide the highest protection to the nation’s most sensitive waters,” said Michael Hunter, Vice President of Stormwater Product Management. The StormFilter with PhosphoSorb media operating at a specific flow rate of 1.67 gpm/ft2 was able to treat 96% of the runoff volume with a 75% phosphorus load reduction.

About Contech Engineered Solutions LLC

As a leading provider of site solution products and services for the civil engineering industry, the Contech portfolio offering includes bridges, drainage, retaining walls, sanitary sewer, stormwater, erosion control, and soil stabilization products. To contact one of Contech's 50 offices or 300 sales and product professionals nationwide, visit or call 800-338-1122.

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