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What is Nonpoint Source Pollution?

The Environmental Protection Agency lists NSP as

“Nonpoint source pollution generally results from land runoff, precipitation, atmospheric deposition, drainage, seepage or hydrologic modification. The term “nonpoint source” is defined to mean any source of water pollution that does not meet the legal definition of “point source” in section 502(14) of the Clean Water Act. That definition states:

The term “point source” means any discernible, confined and discrete conveyance, including but not limited to any pipe, ditch, channel, tunnel, conduit, well, discrete fissure, container, rolling stock, concentrated animal feeding operation, or vessel or other floating craft, from which pollutants are or may be discharged. This term does not include agricultural storm water discharges and return flows from irrigated agriculture.”

Full page information at EPA.gov

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Stormwater Program for Municipal Separate Storm Sewer Systems (MS4)

Find all information at Minnesota Pollution Control

MPCA

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