Compare and contrast the cleanup and control of nonpoint and point sources of water pollution.
What will be an ideal response?
Point
? Examples include factories, power plants, sewage treatment plants, underground coal mines, and oil wells
? Pollution is discharged from specific locations (e.g., drain pipes, smoke stacks, ditches, sewer outfalls)
? Discrete and identifiable, so are relatively easy to monitor and regulate
? Generally feasible to divert effluent from the waste stream and treat it before it is released into the environment
Nonpoint
? Examples include runoff from farm fields and feedlots, golf courses, lawns and gardens, construction sites, logging areas, roads, streets, and parking lots
? There is no specific location where they discharge, so it can end up in water anywhere
? Typically are scattered or diffuse
? Amount of runoff is seasonal (varies with times and amounts of precipitation); heavy rainfalls may flush or carry a lot of pollutants into lakes, rivers, and other bodies of water at one time
? Much more difficult to monitor, regulate, and treat
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What will be an ideal response?
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