Overview
- The proposed class-action complaint filed July 2, 2026 seeks to represent roughly 1,000 homes within 1.5 miles of Microsoft’s Fairwater Data Center and alleges a persistent hum from cooling equipment and backup generators.
- Plaintiffs say the noise has repeatedly disturbed sleep, limited use of yards and patios, and reduced property values, and they allege the facility constitutes a private nuisance.
- The suit asks the U.S. District Court for the Eastern District of Wisconsin for class certification, monetary damages and injunctions requiring Microsoft to cut noise from the site.
- Microsoft has said engineers investigated, implemented short-term mitigations, and that independent monitoring showed the fixes resolved issues for several neighbors while more sound-reduction components and ongoing monitoring are planned.
- The dispute highlights tensions around the 315-acre AI campus project, a multi‑phase build tied to a roughly $4.7 billion investment in Wisconsin, and raises questions about local permitting, community impacts and how large data centers manage industrial noise.