Install stormwater traps or grids
Overall effectiveness category No evidence found (no assessment)
Number of studies: 0
Background information and definitions
Urban debris can enter marine and freshwater environments in unprocessed stormwaters running off land via stormwater conduits and drainage systems (Armitage & Rooseboom 2000). Litter can negatively affect marine and freshwater mammals through entanglement, ingestion and the introduction of chemical contaminants (Kühn et al. 2015). Stormwater traps or grids are designed to prevent litter from entering stormwaters and may therefore reduce the amount of litter reaching marine and freshwater environments (Armitage 2007).
For an intervention related to stormwater polluted with sewage, see Limit the amount of storm wastewater overflow.
Armitage N. & Rooseboom A. (2000) The removal of urban litter from stormwater conduits and streams: Paper 1 - The quantities involved and catchment litter management options. Water Science and Technology, 26, 181–188.
Armitage N. (2007) The reduction of urban litter in the stormwater drains of South Africa. Urban Water Journal, 4, 151–172
Kühn S., Bravo Rebolledo E.L. & van Franeker J.A. (2015) Deleterious effects of litter on marine life. Pages 75–116 in: Bergmann M., Gutow L. & Klages M. (eds.) Marine Anthropogenic Litter. Springer International Publishing, Cham.