Which environmental benefit is associated with aquaponics?

• A. It reduces discharge to the environment
• B. It uses more energy
• C. It increases water usage
• D. It requires more land

Answer: (A)

Aquaponics uses a closed-loop system where water is continuously recirculated between fish tanks and plant beds. Because the water is reused and nutrients are reused as they move between fish waste and plant uptake, there is far less discharge of wastewater into the environment. This reuses water and nutrients, reducing pollution risk and water pollution in nearby waterways.

Energy use can vary with system design, and land use can be efficient by stacking or compact layouts, but the most clear environmental benefit is the reduction of discharge due to water recirculation and nutrient reuse.