Cheyenne traces rare water system bacteria to Meta contractor
Cheyenne's Board of Public Utilities traced rare Cupriavidus gilardii bacteria in the city's wastewater and reuse system to Goat Systems LLC, a Meta data center contractor, after fill-and-flush cooling work at Meta Cheyenne Datacenter CHY 1-2. The city revoked discharge privileges, spent months cleaning the cheyenne water system bacteria contamination, and suspended similar data center wastewater until further notice.
Key Takeaways
- Goat Systems LLC, building Meta's roughly $800 million Project Cosmo campus, discharged Cupriavidus gilardii during fill-and-flush operations at Meta Cheyenne Datacenter CHY 1-2.
- The metal-resistant bacterium interfered with Cheyenne's water reclamation facilities and contaminated the municipal reuse water system—not public drinking water.
- BOPU revoked Goat Systems' industrial discharge privileges on March 24, 2026, after tracing the source through field investigations and targeted sampling.
- After months of remediation, reuse irrigation resumed June 29, 2026; on July 2, Cheyenne suspended all data center fill-and-flush and closed-loop wastewater discharges citywide.
- Meta said it is supporting general contractor Fortis, which halted sewer discharges and began hauling wastewater offsite with independent testing.
What Happened to Cheyenne's Water System?
In late February 2026, BOPU laboratory staff found an unusual bacterium during routine wastewater sampling. Additional testing by the Wyoming Public Health Laboratory identified it as Cupriavidus gilardii, a naturally occurring organism commonly found in soil and groundwater that is known for high metal resistance.
Through extensive field investigations, BOPU traced the cheyenne water system bacteria to an industrial user discharging fill-and-flush wastewater—the process used to clean and test cooling systems before a facility begins operation. The contaminant entered the city's wastewater treatment process and spread into the reuse water network.
BOPU temporarily suspended Cheyenne's reclaimed water irrigation program while staff drained and disinfected the entire reuse water system and Prairie View Pond. Affected irrigation systems were temporarily converted to potable water supplies to prevent migration through the distribution network.
Who Is Responsible for the Meta Data Center Discharge?
On July 2, 2026, BOPU publicly named Goat Systems LLC as the source—the corporate entity Meta uses for construction of its sprawling nearly 800,000-square-foot Cheyenne data center campus, developed as Project Cosmo in the High Plains Business Park.
Goat Systems was in significant noncompliance with the city's industrial pretreatment regulations after discharging wastewater contaminated with Cupriavidus gilardii. BOPU issued a Significant Noncompliance Violation Notice and revoked the company's industrial discharge privileges effective March 24, 2026.
Goat Systems immediately stopped discharging wastewater from fill-and-flush operations after being notified. Cheyenne City Councilman Pete Laybourn called the disclosure "a very, very unpleasant surprise," while Mayor Patrick Collins praised BOPU for catching the contamination and completing cleanup.
How Is Cheyenne Responding to Data Center Wastewater?
Beyond Meta's project, BOPU is suspending acceptance of industrial wastewater from data center fill-and-flush and closed-loop system operations until further notice. The policy applies to all Cheyenne data center developments currently connected to city services.
BOPU now requires industrial companies using closed-loop cooling systems to build separate collection systems directing cooling water and associated floor drains into storage tanks rather than the sanitary sewer. BOPU spokeswoman Erin Lamb noted that closed-loop fill-and-flush practices are relatively new among local data centers, with most existing facilities using evaporative cooling.
Tests at the Dry Creek and Crow Creek wastewater reclamation facilities returned completely negative for the bacteria by June 26, 2026. Reuse water irrigation services resumed June 29, 2026, with signage posted in affected areas following consultation with the Laramie County Public Health Department.
What Did Meta Say About the Contamination?
A Meta spokesman told Cowboy State Daily the company is supporting general contractor Fortis to resolve the issue with BOPU. Meta's statement emphasized the substance was found in the city's wastewater, not public drinking water.
Fortis immediately stopped discharging industrial wastewater and began hauling it offsite. Meta said Fortis also began independent water testing with an environmental specialist that found no trace of the substance. Meta pledged continued collaboration until the situation is resolved.
The incident has fueled broader debate over how Cheyenne regulates industrial users as major tech infrastructure expands—an ongoing story covered in our Celebrity Breaking News section as corporate giants face local accountability questions.