Texas needs freshwater just like California does--aka not at all.

Both states have plenty of freshwater for their citizens. The citizens simply don't soak up that much water. Yes, even with lawns, swimming pools, and golf courses there is plenty of water for citizens.

What both states don't have is plenty of water for agribusinesses--they are pumping their aquifers dry. And desalinization with renewables has zero hope of ever being cost effective enough for agriculture.