In urban areas, storm water
picks up pollution mainly from impervious surfaces and conveys it through pipes
either directly to recipients or to a wastewater treatment plant. An
alternative to this approach is ecological storm water management, where
polluted storm water is treated and volumes are reduced through a variety of
techniques that include infiltration, retention/detention, bio filters, and
structural controls.
THE ABC FOR SUSTAINABLE CITIES
UNEP / UN HABITAT / FIDIC / GI-REC
Based on
Graphic: Sustainable Campus
