Environmental

What is 'groundwater contamination' and why is it a significant issue in Hawaii?

AA. Salt intrusion into agricultural fields; primarily a Maui problem
BB. Contamination of underground freshwater supplies by pollutants, posing a particular risk in Hawaii where groundwater is the primary freshwater source for drinking and agriculture✓ Correct
CC. Ocean water contamination from volcanic activity
DD. Contamination of swimming pools from volcanic gases

Explanation

Hawaii relies heavily on groundwater (basal aquifers) for drinking water and agriculture. Contamination sources include cesspools, agricultural chemicals, military activities (PFAS), and underground storage tanks.

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