causes,effects of water pollution in detail?

Question

i mostly want ....causes , effects and prevention of thermal and radioactive pollution....in detail........

Answer 1

Water Pollution comes from many different sources and can effect many different things. The effects of water pollution are not only devastating to people, but they can kill animals, fish, and birds. Furthermore, the effects of water pollution pose a serious threat to society today and in the future. So try to do your part and don't pollute!

Human infectious diseases are among the most serious effects of water pollution, especially in developing countries, where sanitation may be inadequate or non-existent. Waterborne diseases occur when parasites or other disease-causing microorganisms are transmitted via contaminated water, particularly water contaminated by pathogens originating from excreta. These include typhoid, intestinal parasites, and most of the enteric and diarrheal diseases caused by bacteria, parasites, and viruses. Among the most serious parasitic diseases are amoebiasis, giardiasis, ascariasis, and hookworm.

Look at the following website articles for more details
http://www.geocities.com/RainForest/Andes/9402/Effects.html
http://www.grinningplanet.com/2006/12-05/water-pollution-effects.htm
http://www.grinningplanet.com/2005/09-06/water-pollution-causes-article.htm
http://www.grinningplanet.com/2005/07-26/water-pollution-facts-article.htm

Answer 2

When toxic substances enter lakes, streams, rivers, oceans, and other water bodies, they get dissolved or lie suspended in water or get deposited on the bed. This results in the pollution of water whereby the quality of the water deteriorates, affecting aquatic ecosystems. Pollutants can also seep down and affect the groundwater deposits. Water pollution occurs when a body of water is adversely affected due to the addition of large amounts of materials to the water. The sources of water pollution are categorized as being a point source or a non-source point of pollution. Point sources of pollution occur when the polluting substance is emitted directly into the waterway. A pipe spewing toxic chemicals directly into a river is an example. A non-point source occurs when there is runoff of pollutants into a waterway, for instance when fertilizer from a field is carried into a stream by surface runoff

Answer 3

I have listed the top water pollution causes. Some will surprise you!

There are many specific causes of water pollution, but before we list the toppers, it's important to understand two broad categories of water pollution:

“Point source” — occurs when harmful substances are emitted directly into a body of water.
“Nonpoint source” — delivers pollutants indirectly through transport or environmental change.

An example of a point source of water pollution is a pipe from an industrial facility discharging effluent directly into a river. An example of a nonpoint-source of water pollution is when fertilizer from a farm field is carried into a stream by rain (i.e. run-off).

Point-source pollution is usually monitored and regulated, at least in Western countries, though political factors may complicate how successful efforts are at true pollution control. Nonpoint sources are much more difficult to monitor and control, and today they account for the majority of contaminants in streams and lakes.

Now, on to the more specific categories of water pollution causes.

Pesticides that get applied to farm fields and roadsides—and homeowners' lawns—run off into local streams and rivers or drain down into groundwater, contaminating the fresh water that fish swim in and the water we humans drink. It's tempting to think this is mostly a farming problem, but on a square-foot basis, homeowners apply even more chemicals to their lawns than farmers do to their fields! Still, farming is a big contributor to this problem. In the midwestern United States, a region that is highly dependent on groundwater, water utilities spend $400 million each year to treat water for just one chemical—the pesticide Atrazine.

Many causes of pollution, including sewage, manure, and chemical fertilizers, contain "nutrients" such as nitrates and phosphates. Deposition of atmospheric nitrogen (from nitrogen oxides) also causes nutrient-type water pollution.

In excess levels, nutrients over-stimulate the growth of aquatic plants and algae. Excessive growth of these types of organisms clogs our waterways and blocks light to deeper waters while the organisms are alive; when the organisms die, they use up dissolved oxygen as they decompose, causing oxygen-poor waters that support only diminished amounts of marine life. Such areas are commonly called dead zones.

Nutrient pollution is a particular problem in estuaries and deltas, where the runoff that was aggregated by watersheds is finally dumped at the mouths of major rivers.

Answer 4

Water pollution is a large set of adverse effects upon water bodies such as lakes, rivers, oceans, and groundwater caused by human activities.

Although natural phenomena such as volcanoes, algae blooms, storms, and earthquakes also cause major changes in water quality and the ecological status of water, water is only called polluted when it is not able to be used for what one wants it to be used for. Water pollution has many causes and characteristics. Increases in nutrient loading may lead to eutrophication. Organic wastes such as sewage impose high oxygen demands on the receiving water leading to oxygen depletion with potentially severe impacts on the whole eco-system. Industries discharge a variety of pollutants in their wastewater including heavy metals, resin pellets, organic toxins, oils, nutrients, and solids. Discharges can also have thermal effects, especially those from power stations, and these too reduce the available oxygen. Silt-bearing runoff from many activities including construction sites, deforestation and agriculture can inhibit the penetration of sunlight through the water column, restricting photosynthesis and causing blanketing of the lake or river bed, in turn damaging ecological systems.

Pollutants in water include a wide spectrum of chemicals, pathogens, and physical chemistry or sensory changes. Many of the chemical substances are toxic. Pathogens can produce waterborne diseases in either human or animal hosts. Alteration of water's physical chemistry include acidity, electrical conductivity, temperature, and eutrophication. Eutrophication is the fertilisation of surface water by nutrients that were previously scarce. Even many of the municipal water supplies in developed countries can present health risks. Water pollution is a major problem in the global context. It has been suggested that it is the leading worldwide cause of deaths and diseases,[1][2] and that it accounts for the deaths of more than 14,000 people daily.[2]

Causes

1.Pesticides.
2.Fertilizers / nutrition pollution.
3.Oil, gasoline and additives.
4.Mining.
5.Sediment.
6.Chemical and industrial processes.
7.Plastic.
8.personal care products , household cleaning products, and pharmaceuticals.
9.Sewage.
10.Air pollution.
11.Carbon-dioxide.
12.Heat.
13.Noise.

Effects

1.Waterborne infectious diseases.
2.Nutrient pollution.
3.Chemical contamination.
4.Marine debris.
5.Thermal pollution.
6.Noise pollution.
7.Costs to consumers.

Answer 5

Causes:
http://www.grinningplanet.com/2005/09-06/water-pollution-causes-article.htm
Effects:
http://www.grinningplanet.com/2006/12-05/water-pollution-effects.htm

All the best!

Answer 6

Surface water is especially susceptible to pollution.Run off from agricultural land feeds directly into rivers and lakes.Pesticide kills wildlife and fertilisers cause overgrowth of aquatic plant life,using up oxygen and choking waterways.Sewage and industrial effluent are often discharged directly into waterways.The temperature of effluent is important as well as the content,as higher temperatures can kill aquatic life.

Answer 7

if we clean animals in rivers that causes water pollution
if we throw our trash in the rivers and oceans that causes water pollution
if we clean animals in the river that can cause the water to become polluted and that can spread into the whole river
if we throw our trash in the rivers and oceans the water becomes smelly and the place will be filled with all mosquitos and flies.

Answer 8

Please study in a library, the books on water pollution, its causes, effects and some solutions. It will take several months, preparing the thesis.

Answer 9

Hi there,
the scope and limitations of this column prevents me from answering in detail...though.....
please visit the site :
"http://www.ce.ncsu.edu/undergraduate/ene/E100/sld005.htm

best wishes...