Event Mean Concentrations of pollutants in stormwater runoff by land use. Source: National Stormwater Quality Database.
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Land use | Phosphorus EMC (mg/L) | TSS EMC (mg/L) | ||||
---|---|---|---|---|---|---|
Low | Medium | High | Low | Medium | High | |
Commercial | 0.15 | 0.25 | 0.35 | 120 | 140 | 160 |
Industrial | 0.15 | 0.25 | 0.25 | 130 | 150 | 170 |
Institutional | 0.15 | 0.25 | 0.35 | 100 | 120 | 140 |
Multi-use | 0.3 | 0.4 | 0.5 | 120 | 140 | 160 |
Municipal | 0.2 | 0.3 | 0.4 | 120 | 140 | 160 |
Open space | 0.1 | 0.2 | 0.3 | 70 | 90 | 110 |
Residential - high density | 0.3 | 0.4 | 0.5 | 120 | 140 | 160 |
Residential - low density | 0.4 | 0.5 | 0.6 | 130 | 150 | 170 |
Residential - medium density | 0.2 | 0.3 | 0.4 | 100 | 120 | 140 |
Transportation | 0.3 | 0.4 | 0.5 | 115 | 135 | 155 |