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As with all garbage on a landfill it will slowly decompose and that takes a really long time.
Chemicals will eventually sink down and mix with groundwater.
Nutrition and bacterias as well.
This can pollute groundwater for generations to come.
You ask for 3 threats but I can mainly think of one real threat and that is pollution as in oil or various chemicals.
Bacterias can be of an issue if one pump up water close by, but these bacteria will most likely die off and be filtered away by the sand and soil in the ground over a relatively short distance.
A third possibility could be radioactivity but this sort of waste-product is not allowed on an ordinary landfill.
Finally, if not professionally designed and frequently topped by bulldozing a soil layer on top, contamination is a threat.
What else can I help you with?
Why must landfills be replaced far away from groundwater sources?
Landfills must be located far away from groundwater sources to prevent contamination of the water supply. Leachate, a liquid byproduct of decomposing waste in landfills, can contain harmful chemicals that can seep into the groundwater and pollute it. Placing landfills away from groundwater sources helps protect the quality of drinking water and the environment.
What is groundwater and why is groundwater pollution the most likely environmental danger of landfills?
Groundwater is water that is stored beneath the earth's surface in soil and rock formations. Groundwater pollution from landfills occurs when chemicals and toxins from the waste leak into the groundwater, contaminating it and posing risks to human health and the environment. This is a common environmental danger of landfills because the liner systems meant to prevent leakage can degrade over time, allowing pollutants to seep into the groundwater.
How could hazardous wastes in landfills eventually affect groundwater.?
because the dirt will absorb the hazardous waste from the landfills and goes from the dirt into the water. :)
What is two threats to groundwater?
Two threats to groundwater are contamination from pollutants such as chemicals, pesticides, and fertilizers leaching into the groundwater from the surface, and over-extraction of groundwater leading to depletion of water reserves. Both can have serious consequences for drinking water quality and ecosystem health.
What can lead to groundwater shortages?
Droughts,climate change,overuse, andpollution from factories, landfills and fracking.
Can lead to groundwater shortages?
Droughts,climate change,overuse, andpollution from factories, landfills and fracking.
How do sanitary landfill sites prevent chemicals from moving into the groundwater?
To prevent chemicals from moving into the groundwater, sanitary landfills use plastic liners and compacted clay .
Why are leaking landfills and septic tanks a concern to people who use groundwater?
What comes out of the landfills and septic tanks goes into the water. I would rather not drink someone's sewage.
What must be done to waste water collected from landfills that will prevent the pollution of groundwater?
treated before it is used
Why was open dumping in landfills outlawed in many states?
Open dumping in landfills was outlawed in many states due to the environmental hazards it posed, such as groundwater contamination, air pollution, and soil degradation. Landfills that did not properly contain waste could lead to the release of toxins into the environment, causing harm to human health and ecosystems. To protect public health and the environment, regulations were put in place to require proper waste management practices in landfills.
Why do sanitary landfills have protective liners of compacted clay and high density plastic?
These liners prevent the contamination of groundwater
How could hazardous chemicals deposited in landfills eventually affect groundwater?
The seep into the ground (polluting aquifers that we use for drinking water) and to the surface and cause widespread environmental damage (harm to life on Earth).
