A local water profe ssional di sputed City Manager Thomas Mattis’ claims regarding Elgin’s water and wastewater treatment plant in a recent interview with the Courier.Taylor Christian, 35, has worked for more than a decade as a water data scientist for the state. She has surveyed infrastructure for drinking water systems and developed population and water demand projections, estimating needs for Texas into the next 20 years.During his community growth report, Mattis stated, “Elgin sits on top of the largest and maybe most prolific aquifer in the state.”“I’m confused about what the confusion is about, people seem to be under ...