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If raw or improperly treated sewage is discharged to a stream on purpose or by misadventure (pipe breaks, leaks etc.) it can pollute the water by: * Increasing the burden of fecal organisms * Adding chemical contaminants * Depleting the oxygen levels in the water * Making the water aesthetically unappealing (foams, solids and odours) * Covering the stream bed with solids

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15y ago
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12y ago

so many things in our world can pollute first of u have farms. things like string Tyer's wire nasty chemicals and poo from animals can pollute it also humans pollute it as well with things like chips packets cans plastic, rubbish like that and don't clean it up a ( not talking to all people here) as u can see allot can pollute it

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Q: How do sewers contribute to pollution in water?
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How do humans contribute water pollution?

The sewage n garbage we throw out and the chemicals from factories contribute to water pollution.


What has the author Anne M Vitale written?

Anne M. Vitale has written: 'Total urban water pollution loads' -- subject(s): Environmental aspects, Environmental aspects of Storm sewers, Pollution, Storm sewers, Urban runoff, Water


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air evaporates and pollution causes acid rain!


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certain things on the pavement such as oil and other objects will run in to water sources and they arent good for the water causing pollution


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the issues - contribute to health problems and lower quality of life


What has the author William J Snodgrass written?

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As a society we pollute water by throwing trash into rivers, drilling for oil, and by mining for coal.


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