The city of Cheyenne has suspended water discharge operations at a Meta data center after a contractor's closed-loop cooling system purge contaminated the municipal reuse water supply. The incident involved a rare metal-resistant bacterium, prompting immediate shutdown and a months-long cleaning process for the affected system.
The contamination occurred during a standard commissioning step known as "fill-and-flush," where crews fill cooling pipes with water and flush debris before system activation. The purge inadvertently spread the bacterium through Cheyenne's reclaimed water infrastructure, raising concerns about industrial oversight.
City officials have not released specific details on contamination levels or health risks. The closed-loop cooling system remains offline for decontamination, with no timeline confirmed for resumption of operations. The bacterium's metal-resistant nature suggests potential challenges for standard treatment methods.
This incident highlights growing tensions between hyperscale data center expansion and municipal water resource management. As tech giants build increasingly water-intensive facilities, municipalities like Cheyenne face pressure to balance economic development with infrastructure protection. Meta has not publicly commented on remediation costs or future prevention measures.
Environmental groups may scrutinize whether current commissioning protocols adequately protect public water systems. The suspension underscores the need for more robust testing before industrial discharges into municipal supplies.