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→Pollutant removal capacity
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Drainage Systems. Executive Summary. Prepared for the Infrastructure Management
Drainage Systems. Executive Summary. Prepared for the Infrastructure Management
Division of the City of Ottawa. Ottawa, Ontario.</ref>. The Nepean systems were shown to release significantly less pollutants than the conventional sewer system, even after 20 years of operation<ref name=Sabourin/>.
Division of the City of Ottawa. Ottawa, Ontario.</ref>. The Nepean systems were shown to release significantly less pollutants than the conventional sewer system, even after 20 years of operation<ref name=Sabourin/>.
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+{| class="wikitable sortable"
+|+Pollutant removal efficiencies of vegetated filter strips
+|-
+!Practice
+!Location
+!Lead %
+!Copper %
+!Zinc %
+![[Total suspended solids]] (TSS) %
+!Total [[Phosphorus]] %
+!Total [[Nitrogen]] (TKN) %
+|-
+|Soakaway||Valence, France<ref></ref>||98||-||54 - 88||-||-||-
+|-
+|[[Infiltration trench]]||Various<ref></ref>||70 - 90||70 - 90||70 - 90||70 - 90||50 - 70||40 - 70
+|-
+|Grass swale/perforated pipe||North York, ON<ref></ref>||75||96||93||24||84||84
+|-
+|Grass swale/perforated pipe||Nepean, ON<ref></ref>||- 99||66||0||81||81||72
+|-
+|grass swale/perforate pipe||Nepean, ON<ref></ref>||> 99||> 99||90||96||93||93
+|}
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+
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