Examples of Nonpoint Source Pollution
Nonpoint source pollution originates from a wide variety of sources.
The examples given below are not an exhaustive list; more examples can
be found on the Louisiana Nonpoint
Source Pollution Program web site.
- Erosion-prone areas deposit excess amounts of sediment into nearby
receiving water, which can cause aesthetic, recreational, biological,
physical, and chemical degradation.
- Chemicals (such as fertilizers, herbicides, and pesticides) can wash
into water bodies through erosion or storm water run-off.
- Dumping chemicals (such as motor oil and antifreeze) into storm drains.
- Illegal hookups of storm drains to sanitary sewers can result in increased
volumes of flow to waste water treatment plants, causing more frequent
overflows of sewage into receiving water.
- Conventional septic tank systems can cause nonpoint source pollution
where the soil is inadequately porous to allow percolation of liquids
and/or the ground water level is high.
- Precipitation can collect airborne contaminants.
- Precipitation can wash heavy metals and tar residuals from roads into
nearby bodies of water.
- Automobiles and mechanical equipment can leak petroleum residues.
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Last updated Monday, November 17, 2003 7:02.