What is the core water controversy?

Could you please elaborate on the "core water controversy"? Are we discussing the ongoing debate surrounding water usage and scarcity in the context of cryptocurrency mining, where large amounts of energy and water are consumed in the process of validating transactions and securing the blockchain? Or is it referring to a specific dispute or conflict related to water rights or access in a particular region? Clarifying the context would help me provide a more accurate and relevant description of the CORE water controversy.