Texas is doing things to try and address it. Prop 4 passed allocating another billion a year in sales taxes to go towards water infrastructure.

https://www.texaswater.org/prop-4

Texas has also recently started building new reservoirs after a long time of not building any. Bois d'Arc and Arbuckle have recently been finished, others are in progress, and a few more are in planning phases.

There's a lot to hate on about Texas politics but there are some competent people trying to address water concerns. Not saying Texas is doing everything perfectly, we're still drawing on aquifers at an unsustainable rate and need to change that.