For Question 2, without the specific data from the water quality results or MCLs for the minerals listed, I can't provide a definitive answer. Typically, however, fluoride is often found in higher average concentrations in water systems while still being below its MCL.
For Question 3, the most appropriate response would be: "The Range of 6.97-7.35 is much closer to the acceptable, neutral range of consumable (or potable) water." This indicates that the Tawas City Water Treatment Plant aims for a pH that is optimal for consumption, taking into account the specific conditions of their water source.