When.com Web Search

  1. Ad

    related to: point source pollution or nonpoint area

Search results

  1. Results From The WOW.Com Content Network
  2. Nonpoint source pollution - Wikipedia

    en.wikipedia.org/wiki/Nonpoint_source_pollution

    Although this is a point source, due to the distributional nature, long-range transport, and multiple sources of the pollution, it can be considered as nonpoint source in the depositional area. Atmospheric inputs that affect runoff quality may come from dry deposition between storm events and wet deposition during storm events.

  3. Point source pollution - Wikipedia

    en.wikipedia.org/wiki/Point_source_pollution

    A point source of pollution is a single identifiable source of air, water, thermal, noise or light pollution. A point source has negligible extent, distinguishing it from other pollution source geometrics (such as nonpoint source or area source). The sources are called point sources because in mathematical modeling, they can be approximated as ...

  4. Nonpoint source water pollution regulations in the United ...

    en.wikipedia.org/wiki/Nonpoint_source_water...

    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 ...

  5. United States regulation of point source water pollution

    en.wikipedia.org/wiki/United_States_regulation...

    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.

  6. Water pollution in the United States - Wikipedia

    en.wikipedia.org/wiki/Water_pollution_in_the...

    Nonpoint source pollution is the most common type of pollution because as rainfall runs off of land on its path to different water sources, it becomes contaminated by pollutants from the surrounding area. These sources include agriculture related pollutants, urban runoff, or drainage. The CWA does not authorize the issuance of NPDES permits for ...

  7. Water pollution - Wikipedia

    en.wikipedia.org/wiki/Water_pollution

    Sources of water pollution are either point sources or non-point sources. [4] Point sources have one identifiable cause, such as a storm drain, a wastewater treatment plant, or an oil spill. Non-point sources are more diffuse. An example is agricultural runoff. [5] Pollution is the result of the cumulative effect over time. Pollution may take ...

  8. Great Lakes Areas of Concern - Wikipedia

    en.wikipedia.org/wiki/Great_Lakes_Areas_of_Concern

    Nonpoint source pollution is pollution that occurs when runoff from streets, lawns, farms, and other areas carries toxins, chemicals, and eroded soil into nearby lakes, rivers, and oceans causing pollution and buildup of sediment. Nonpoint source pollution is said to be the most problematic and hardest to reverse of the types of pollution ...

  9. Area source pollution - Wikipedia

    en.wikipedia.org/wiki/Area_source_pollution

    Area sources are sources of pollution which emit a substance or radiation from a specified area.Examples of area sources include gas stations, dry-cleaners, print shops, autobody shops, furniture manufactures, and home sources such as wood stoves, pesticides, and cleaners. Area sources contribute to 26 percent of all man-made air toxic ...