Overview
- Three Sturtevant residents filed the federal class‑action on Wednesday, July 1, 2026 seeking damages and injunctive relief for people living within 1.5 miles of the Fairwater facility.
- The complaint says continuous noise from diesel generators and HVAC equipment, including chillers, cooling towers and condenser fans, has caused sleep disruption, property harm and reduced outdoor use.
- Microsoft says engineers investigated the April humming, implemented mitigations and reported on June 18 that independent monitoring and some neighbors showed the tonal problem was resolved while additional sound‑reduction work continues.
- Plaintiffs dispute Microsoft’s assessment and also cite light pollution, construction dust and traffic as ongoing harms that they say were not adequately addressed by the company.
- The case will proceed in the U.S. District Court for the Eastern District of Wisconsin and could affect local responses to future hyperscale AI data center builds and permitting practices.