Which of the following statements best describes environmental concerns associated with hydraulic fracturing (fracking)?

• A. No water usage in operation
• B. Groundwater contamination risk
• C. Reduced methane emissions due to better capture
• D. Increased biodiversity due to drilling

Answer: (B)

When evaluating environmental concerns from hydraulic fracturing, the most important issue is the risk of groundwater contamination. Fracking uses large volumes of water mixed with chemicals and sand injected at high pressure to create fractures in rock and release oil or gas. If well integrity is compromised (for example, flaws in the steel casing or cement that seals the well) or if fluids spill at the surface or migrate from waste pits, contaminants can move into nearby groundwater. Methane itself can also migrate into aquifers if there are leaks or poor well construction. This water-quality risk directly affects drinking water supplies and aquatic ecosystems, making groundwater contamination the central environmental concern.

Other statements don't fit as well. Fracking does require substantial water use, not zero, so the claim of no water usage is incorrect. While there are efforts to capture and reduce methane, emissions from fracking can still be significant, and the idea that emissions are universally reduced by better capture isn’t guaranteed. Drilling activities often disrupt habitats and can reduce biodiversity at and around the site, rather than increase it.