Relating to the enforcement of drought contingency plans by water and sewer utilities and the Public Utility Commission of Texas.

HB 5559 requires Texas water and sewer utilities to file drought contingency plans with the Public Utility Commission (PUC) and mandates that the PUC enforce these plans. The bill adds "compliance with a drought contingency plan" as a valid reason for utilities to reduce or discontinue service during droughts, alongside other standard exceptions like nonpayment. This directly affects water and sewer utilities operating in Texas, requiring them to submit detailed drought response strategies to the PUC for oversight. The law updates existing Water Code provisions to formalize the PUC's role in reviewing and enforcing these plans, ensuring utilities have prepared measures for water scarcity.