Water Notes
Water Pollution
_________________________________ of bodies of water often by human activity,
which affects ___________________________
Occurs when pollutants are discharged _____________________ or
____________________into the water.
Along with air pollution, water pollution is the _____________________ biggest
environmental concern.
Point Source Pollution
Nonpoint Source Pollution
Types of Water Pollution
Surface water
______________________________
Chemical
______________________________
______________________________
Water Notes
Surface Water Pollution
_____________________________ substances coming into contact with surface water
Dissolves or mixes __________________________ with the water
Examples: Humans dumping trash into the waterways, especially objects that are
swept down ________________________.
Oil Pollution
Release of liquid ______________________ hydrocarbons (oil) into the water
Especially harmful to marine and other _______________________
Usually localized, but can _______________________
Examples: oil spills
Chemical Water Pollution
Chemical from _____________________ and ____________________ that run off into the
waterways.
Examples: ______________ and solvents from industries
Also, chemical that control ______________, _______________, and pests.
Groundwater Pollution
___________________ and chemicals wash deep into the ground by ________ water
Can get into the ___________________ , thus polluting the groundwater
Anything on the surface can eventually work its way down to the
__________________________.
Agricultural Pollution
________________________ washing off fields are the largest source of
___________________________________________ in the U.S.
Sediments _________________ the cost of treating drinking water and can also clog
fish _________, reducing their resistance to _____________________.