Typical Roof Runoff Quality in Minneapolis and Wisconsin Revision as of 20:19, 3 August 2022 by Mtrojan (talk | contribs)(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff) Typical Roof Runoff Quality in Minneapolis and Wisconsin

Typical Roof Runoff Quality in Minneapolis and Wisconsin
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Constituent	Minneapolis1	Wisconsin2
E. coli (#/100 mL)	764
Total Solids (mg/L)		126
Total Solids (mg/L)	10	19
Total Hardness (mg/L)		44
Total Nitrogen (mg/L)	0.421
Ammonia-N (mg/L)	0.268
Nitrate-N (mg/L)	0.586
Total Phosphorus (mg/L)	0.104	0.24
Total Dissolved Phosphorus (mg/L)	0.076	0.11
Soluble Reactive Phosphorus (mg/L)	0.065
Cadmium (mg/L)		0.0004
Copper (mg/L)	0.0075	0.01
Lead (mg/L)	0.0032	0.01
Zinc (mg/L)	0.101	0.363

¹ Arithmetic mean concentrations; Reference: Minneapolis Public Works, City of Minneapolis Neighborhood Rain Barrel Partnership Project, 2008 ² Highest geometric mean concentration reported; Reference: Roger T. Bannerman and Richard Dodds, Sources of Pollutants in Wisconsin Stormwater, 1992