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Nonpoint source (NPS) water pollution regulations are environmental regulations that restrict or limit water pollution from diffuse or nonpoint effluent sources such as polluted runoff from agricultural areas in a river catchments or wind-borne debris blowing out to sea. In the United States, governments have taken a number of legal and ...
To control nonpoint source pollution, many different approaches can be undertaken in both urban and suburban areas. Buffer strips provide a barrier of grass in between impervious paving material like parking lots and roads, and the closest body of water. This allows the soil to absorb any pollution before it enters the local aquatic system.
Topsoil runoff from farm, central Iowa (2011). Water pollution in the United States is a growing problem that became critical in the 19th century with the development of mechanized agriculture, mining, and manufacturing industries—although laws and regulations introduced in the late 20th century have improved water quality in many water bodies. [1]
The Clean Water Act has made great strides in reducing point source water pollution, but this effect is overshadowed by the fact that nonpoint source pollution, which is not subject to regulation under the Act, has correspondingly increased. [41] One of the solutions to address this imbalance is point/nonpoint source trading of pollutants.
TMDL is the end product of all point and non-point source pollutants of a single contaminant. Pollutants that originate from a point source are given allowable levels of contaminants to be discharged; this is the waste load allocation (WLA). Nonpoint source pollutants are also calculated into the TMDL equation with load allocation (LA). [7]
Amendments in 1977 required stricter regulation of toxic pollutants. [18] In 1987 Congress expanded NPDES permit coverage to include municipal and industrial stormwater discharges. [19] The Act also requires use of best management practices for a wide range of other water discharges including nonpoint source pollution. [20]
States can directly shape federal policy in the way states choose to enforce, or not enforce, environmental regulation. Federal regulation of nonpoint source water pollution is often cited as weak, in part because localities often lack the incentive to enforce federal regulations, and federal enforcers do not have the authority to countermand ...
Nonpoint source, or non-point source, or NPS, is a source that does not come from a single point. Point source, contrasts with nonpoint source; Nonpoint source pollution, water pollution; Nonpoint source water pollution regulations, water pollution regulations