Answer: Our main water supply is the Trinity Aquifer and the wells have an average depth of 2,700 feet. The water is warm because of the heat that is naturally produced by the earth at this depth. We pump water from the wells into storage tanks that sit on top of the ground where the water is stored until the elevated storage tanks (towers) need replenishing. When this need occurs, pumps will transfer the water from the ground tanks into the elevated tanks and the distribution system. During off-peak conditions (November-April), the water will sit in the ground tank long enough for it to cool; however, in the summer months, the time that the water sits in the ground tank is dramatically shortened so that cooling does not take place.