Skip to main content

Outfall Safari

One of the major threats to water quality in urban rivers is misconnected pipes. These send pollution into rivers via the surface water drainage system and compromise the biodiversity and amenity value of our waterways.


In partnership with Thames Water, the Environment Agency, fellow NGO’s and communities in Greater London, the Zoological Society of London (ZSL) has developed an innovative, citizen science method for locating, assessing the impact of, and reporting on these polluting pipes. This method is known as the Outfall Safari. Further information and resources can be found on the ZSL website and on the Catchment Based Approach (CaBA) website.