BMP pollutant removal for total suspended solids
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BMP pollutant removal for total suspended solids

Median pollutant removal of total suspended solids by stormwater treatment practices. Values represent percentage of incoming pollutant load that is removed. Source: Minnesota Stormwater Manual.

Bioretention^a	85^c
Filtration^b	85
Infiltration^d	100
Stormwater ponds	80
Stormwater wetlands	75

^aData based on fewer than five monitoring studies ^bExcludes vertical sand filters and filter strips ^cFiltration values used ^dNote that 100% is assumed for all infiltration, but only for that portion of the flow fully treated in the infiltration facility; by-passed runoff does not receive any treatment.