Nov 5, 2025 · 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:

Nonpoint source (NPS) pollution refers to diffuse contamination (or pollution) of water or air that does not originate from a single discrete source. This type of pollution is often the cumulative effect of small …

With increased control over point source pollution, scientists have begun to focus on nonpoint source pollution, how it affects the quality of the environment, and, even more importantly, how it can be …

Oct 1, 2024 · Because acid rain results from the long-range movement of those pollutants from many factories and power plants, it is considered nonpoint-source pollution. In the United States, the Clean …

Jun 14, 2025 · Nonpoint source pollution is often described as runoff pollution. This means that rainfall or snowmelt moves across the land and picks up natural and human-made pollutants, depositing …

Nonpoint source pollution (NPS pollution) refers to the contamination of water bodies that arises from diffuse sources rather than a single, identifiable source. Unlike point source pollution, which can be …

Sep 29, 2025 · Nonpoint Source (NPS) pollution is caused by rainfall or snowmelt moving over and through the ground, it picks up and carries natural and human-made pollutants, depositing them into …

Nonpoint source pollution occurs when runoff from rain and snowmelt carries pollutants into waterways such as rivers, streams, lakes, wetlands, and even groundwater.

The sources of water pollution are also varied, from factories to drain pipes. In general, NOAA’s Office of Response and Restoration (OR&R) classifies water pollution into two categories; point source and …

Jun 17, 2025 · A nonpoint source of pollution (NPS) is diffuse contamination that does not originate from a single, identifiable source. Unlike pollution from a specific discharge pipe, NPS pollution comes …