The ‘GHI’ of Water Pollution

februar 25, 2008 at 8:15 am 10 kommentarer

G

Groundwater PollutionGroundwater describes any kind of water “trapped” underneath the surface of the earth. It can be flowing water, permafrost or water mixed with other liquids. Groundwater is not static, in the sense that it stays a a particular level in the earth, it travels with time and move down the water table. Groundwater is normally of a very good quality because of the natural filtering that occurs when then the water passes through the ground.

Groundwater pollution can come from many different sources, but mostly is it due to rain soaking into the ground. This way it comes in contact with waste and chemicals and drags it down into the groundwater. Groundwater pollution is a known threat to the European waters. Many countries relies heavily on groundwater for their drinking supplies. This means new technologies has to be developed to clean the water, as we can’t wait for it to happen naturally.

H

HypoxiaHypoxia essentially means “low oxygen”. It is often caused by excess nutrients in the water. This causes the growth of algae. Algae limits sunlight and takes up oxygen when they die. This will cause a decrease in dissolved oxygen and therefore a state of hypoxia. Fish and other aquatic animals can’t survive in hypoxic waters and they will search for better water some times leading to many animals occupying the same place.
A hypoxic zone is created when there is a large demand for oxygen at bottom waters and algae or other circumstances are preventing new oxygen from getting into those waters. The most damaging effects of hypoxia includes, long term weakening of species, habitat loss and economic losses.

I

IncesticidesInsecticides are chemicals used to combat pests. It’s a form of pesticide, and is normally used in agricultural environments with varying effects on the environment.

One of the most known insecticide DDT, was initially developed as a safer form of pesticide, and as an alternative to toxic and arsenic. But used improperly, it can cause huge damage to water ways, contaminating fish and other creatures.

Insecticides can have many negative effects on the environment, especially when applied from aeroplanes. When used in properly the effects are minimal, but with heavy use, the substance can be carried through the water table and ultimately cause polluted groundwater.

Also check out The ‘JKL’ of Water Pollution about:
J) Jardine Water Purification Plant
K) Kazakhstan’s Lake Balkhash
L) Livestock Operations

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Entry filed under: ABC Series, Environment, Water Pollution. Tags: , , , , , .

The ‘DEF’ of Water Pollution Environmental News Online (ENO): Now Live

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