Today, sanitary landfills are replacing these dumps. Sanitary landfills have specially designed liners that protect the environment by keeping the waste and leachate in the ground within the landfill. The leachate drains to the bottom of the landfill where it is pumped out. Then it's treated at the landfill site or at a sewage treatment plant. Once treated, the liquid can be safely released into the city waterways.
The garbage in the landfills is crushed and compacted by bulldozers. When the landfill is full, it is covered with clay, then soil. The soil will become the home for grass, plants and trees. The landfills themselves are often recycled or reused as parks and other recreational areas!
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