WEREC, an engineering firm working on stormwater management, installed in June 2017 a stormwater filter on behalf of the municipality of Örebro, in Sweden.

After a pre-filter which separates oils / fats, the main filter is filled with Filtralite Nature P, a lightweight expanded clay aggregate that, in addition to particle removal, also binds phosphorus.

Moreover, the filter media is easy to replace and is expected to last for 10 years.