Final answer:
Vertical dry wells, or injection wells, are used for the disposal of treated wastewater or recharging groundwater. They prevent contamination and help maintain the water table level.
Step-by-step explanation:
Vertical dry wells, also known as injection wells, are used for the disposal of treated wastewater or for the recharging of groundwater. They help prevent the contamination of surface water and maintain the water table level in the surrounding area. These wells are typically drilled deep into the ground and are lined with impermeable materials to ensure that the water is contained and does not mix with the surrounding soil or rock layers. They play an important role in managing water resources and protecting the environment.
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