Using a 43,000 sq ft section of a car park, the EPA’s (Environmental Protection Agency) Green Infrastructure Research Programme is testing three different types of permeable pavements to discover which will improve water filtration the most.

Geotexile fabric in the porous pavement test beds will drain the accumulated rainwater into a collection tank for sampling. The EPA’s programme aims to find a porous pavement which will separate rain, flood and storm water from pollutants such as spilled petrol and road sediment preventing them from entering the underground water supply.

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