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Water Pollution and legislation
Types of Pollution
Todays Water Quality
Pollution Control
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Row 1, Col 1
What is the difference between Point and nonpoint source
pollution?
Point-discharge at a specificSite
Non-point- discharge over aScattered area
1,2
Give an example of an infectiousAgent and explain
Where it comes from.
Bacteria, virus, parasite. Animal waste
2,2
What is an oxygen sag?
The place after a point source pollution where bacteria use much of the Oxygen and it creates a DO sag.
2,3
Why is groundwater hard to clean?
It is mainly expensive to treat groundwater. It can be done however for it to be feasible it takes a lot of time
and effort and money.
2,4
What can wetlands do to treat Sewage?
Wetlands are great ways to get rid of excess chemicals in sewage that are left over from the normal sewage treatment process. Wetlands can also treat small
quantities of sewage all by themselves.
3,1
What kind of chemicals canAtmospheric deposition deposit?
PCBs and dioxins also granulated toxins
3,2
Explain a red tide.
An algal bloom of deadly aquatic microorganisms that release a toxin that can kill entire ecosystems.
3,3
What is a TMDL?
Total maximum daily load– the maximum amount of a chemical that a body of water can receive in a day.
4,1
Why was the Clean Water ActSo successful?
It was a bipartisan act that made a great effort to make the nations waters cleaner and safer for the population.
4,2
What is the greatest threat with A metal pollutant?
Where does it come from?
Mercury…Draining mines and coal burning power plants
4,3
Why are plastics so dangerous toMarine ecosytems?
Most plastics are not biodegradable. This means they can circulate the globe and reach even far away, remote
islands which is hard to manage because of the widespread destruction.
4,4
What is the cheapest way to reducePollution? Why is that?
Targeting the source is the easiest way. This is because only that small area is contaminated so it is much easier
to clean up.
5,2
How does erosion lead to water pollution?
Fills lakes and streams. Sediment can also fill gravel beds where some fish lay their eggs.
5,3
Where does 75% of the pollutionIn the Us come from?
Soil from surface runoff, particulate fallout, and soil erosion.