ENVS 1200 Lecture Notes - Lecture 4: Thermal Pollution, Waterborne Diseases, Nutrient Pollution
3 May 2018
School
Department
Course
Professor
Water Pollution
January 20, 2015
*Chapter 16
Freshwater Pollution:
Pollution – the release of matter or energy into the environment that causes
undesirable impacts on the health and well-being of humans or other organisms
• Nutrient pollution
• Pathogens and waterborne diseases
• Toxic chemicals
• Sediment
• Thermal pollution
Water for human consumption and other organisms needs to be disease-free and
non-toxic.
This is why the water supply in high-income countries is monitored closely.
Pollutants enter the water supply through:
• Run off
• Seepage into ground water
• Precipitation (acid deposition)
• Point source (outflow pipe)
Point and Non-Point Sources of Pollution
• Point sources – some industrial and agricultural sources discharge pollutants
directly in a body of water
• Nonpoint sources – a variety of sources contribute pollutants that can then
run off the surface of land and into the water
Point source pollution may be easy to remedy, one can identify the source and make
a change.
Non point source is harder to identify the source and limit pollution.
Contaminants from Storm water Runoff:
• Oil/fuel from motor vehicles
• Fertilizers
• Salt from roads
• Pesticides
• Antifreeze
Non-Point Sources of Pollutants from Air:
• Aerosols release chemicals into the atmosphere
• PCBs
• DDT and other pesticides
• Mercury
• Sulphur
find more resources at oneclass.com
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Document Summary
Pollution the release of matter or energy into the environment that causes undesirable impacts on the health and well-being of humans or other organisms: nutrient pollution, pathogens and waterborne diseases, toxic chemicals, sediment, thermal pollution. Water for human consumption and other organisms needs to be disease-free and non-toxic. This is why the water supply in high-income countries is monitored closely. Pollutants enter the water supply through: run off, seepage into ground water, precipitation (acid deposition, point source (outflow pipe) directly in a body of water run off the surface of land and into the water. Point and non-point sources of pollution: point sources some industrial and agricultural sources discharge pollutants, nonpoint sources a variety of sources contribute pollutants that can then. Point source pollution may be easy to remedy, one can identify the source and make a change. Non point source is harder to identify the source and limit pollution.
