ccd edu/courses/48 546/discussion, topics/392412 ogle For this discussion, you w
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ccd edu/courses/48 546/discussion, topics/392412 ogle For this discussion, you will be investigating water supplies in your area and any reported contamination issues. Step 1: Play investigative reporter and find out as much as you can about the water supply in your chosen region. You may chose an area near you, or somewhere else of interest. If you live in the United States, you can find information on the following websites: http:/water.epa gov/drink/local/index.ctm icfoub.epagov/safewater/ccr/index.ctme If you live in a small town in the United States, information may not be available for your specific area. You can choose the nearest big city to investigate instead of your town. Find out the Dollowing . Where does your water come from? For example, is it collected from wells, is it recycled water, or does it come from the ocean and have the salt removed (desalinization)? . How is your water treated? For example, is it naturally filtered, is it treated with chemicals, or is it aerated? . The various reports for your area may mention areas of concern such as bacteria, radon, or lead. Can you find any specific concerns for your area? Step 2: Continue your research by searching local news sources for information about water contamination issues. An easy way of doing this is to perform a Google Nes e search for your state (or country) with the words water contamination, for example, "New Hampshire water contamination. SAMSUNGExplanation / Answer
The arsenic contamination threat in Kolkata has changed alarmingly since 2009, said a study published in the Environmental Monitoring and Assessment journal on September.
Among the 144 wards under Kolkata Municipal Corporation (KMC), 100 have significantly higher arsenic contamination in water than the limits deemed safe by the World Health Organisation (WHO).
Arsenic contamination was limited to central, southeast, and western regions of the city, the study found that while the “major area in north and central Kolkata has entered the red zone (critical)”, “parts of south and far west Kolkata have recovered” with arsenic contamination less than 10 µg/L.
MAIN CAUSE OF CONTAMINATION- the study said, increase in contamination isn’t just related to the increase in population, but also dependent on the “lack of groundwater replenishment in certain regions”.
The ground should be opened as much as possible so that when it rains, the water can infiltrate into the ground surface causes good replenishment of ground water.
The more you cover the ground with concrete, the less you replenish the groundwater. You have rainfall, but everything is concretised. So as a result, the groundwater level decreases, and proportionately, i contamination increases.
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