pollution from a single, identifiable source.

pollution which comes from a well-defined source such as sewage treatment plant effluent from industrial dischargers. . .for purposes of the Clean Water Act, agricultural return flows are not regulate [..]

Pollution from a single identifiable source such as a factory or a sewage-treatment plant.

pollution in water that comes from a single identifiable source, such as a pipe.

Identifiable inputs of waste that are discharged via pipes or drains primarily (but no exclusively) from industrial facilities and municipal treatments plants into rivers, lakes, and ocean.

A specific source of water pollution , usually industrial effluent, as opposed to diverse sources of pollution of domestic origin

Pollution from a single identifiable source such as a smoke stack or a sewage treatment plant.

Pollution that can be traced back to a definite source, such as a drainpipe, is called point source pollution (contrary to nonpoint source pollution). Under the Clean Water Act, the Environmental Protection Agency (EPA) has set limitations on point source pollution and has forced companies to obtain permits to discharge pollutants.

Pollution from a single identifiable source such as a smoke stack or a sewage treatment plant. 

Pollution from a single identifiable source such as a factory or a construction-site. Most of this pollution is highly regulated at the state and local levels.

pollution of surface or ground water supplies at well-defined, usually manufactured points or locations; eg. discharges of treated wastewater from municipal and industrial treatment plants.

Water pollution from a single source such as a sewage plant pipe outfall.

Pollutants discharged from any identifiable point, including pipes, ditches, channels, sewers, tunnels and containers of various types.

pollution that can be traced to a single point source, such as a pipe or culvert (Example: industrial and wastewater treatment plant, and certain storm water discharges).

Pollution that can be traced to a single point source. Examples of point sources are pipes, ditches and factory smokestacks.