Texas Pesticide Applicator Practice Exam

Why are aquifers important to human populations?

1. They provide water for irrigation

2. They are used for recreational purposes

3. They are sources of drinking water

4. They support local wildlife

The correct answer is: They are sources of drinking water

Aquifers are crucial to human populations primarily because they serve as vital sources of drinking water. Many communities rely on groundwater that is stored in aquifers for their daily water supply. This is especially important in areas where surface water supplies may be limited or contaminated. Groundwater from aquifers is generally cleaner and can be more reliably accessed than surface water. While the other options mention valid uses and benefits associated with aquifers, such as providing water for irrigation, supporting local wildlife, and being used for recreational purposes, they do not highlight the fundamental role of aquifers in supplying potable water. The capacity of aquifers to store and filter rainwater makes them an essential resource for maintaining healthy drinking water supplies.