Conjunctive water management, defined as management that acknowledges surface water and groundwater to be interconnected, is a formal system in many states to account for and assure water supply. Most western states are experiencing rising temperatures, longer droughts, and population growth, which makes a challenging combination of decreased water supply yet increased demand. Many states have adopted conjunctive management strategies to address these challenges, but Texas faces unique legal and cultural obstacles. The Edwards, a karst aquifer in south-central Texas, is a prime example of how bifurcated law, limiting judicial processes, decentralization, and the underfunding of Texas water regulation hinders conjunctive management. Despite this, many water-using entities in the Edwards have successfully implemented projects such as aquifer storage and recovery, recharge enhancing infrastructure, bed and banks permitting, voluntary irrigation suspension programs, and drought contingency plans. These initiatives increase water supply for the aquifer’s in-stream flows for endangered species and growing municipal demand. This paper analyzes the past, present, and future of conjunctive management in Texas to secure water for increasing municipal demand and to ensure adequate water levels for environmental support.