Several U.S. municipalities have enacted new regulations tightening data-center siting requirements in response to growing concerns over noise, power demand, and permitting transparency. Denver, Aurora, and Eagan have recently adopted or proposed moratoria and zoning changes, reflecting efforts to balance digital infrastructure expansion with community welfare.
Background
Communities report rising concerns about the constant mechanical noise of data centers, significant energy and water use, and complex permitting procedures. In response, local governments are revising siting rules to protect residents while supporting infrastructure needs.
In Denver, the City Council and mayor proposed a one-year moratorium on data-center construction beginning this spring to review regulations governing energy and water usage, zoning definitions, and utility pricing1Why Denver's considering a data center moratorium. Aurora's city staff introduced new rules that set maximum noise limits at 59 decibels during the day and 49 decibels at night. They also call for setbacks of at least 1,500 feet for roof-mounted chillers and 1,000 feet for generators from homes, schools, or hospitals2Aurora considers new data center regulations around noise, water and power.
Eagan, Minnesota, approved a one-year moratorium covering data centers over 20 megawatts or within 500 feet of residential areas. Existing or approved centers may expand only up to 9 megawatts. The pause allows study of potential impacts including noise, energy and water consumption, and land-use compatibility3Eagan approves one-year moratorium on large data centers.
Details
Denver's proposed moratorium is a response to concerns that current zoning does not address the scale and utility impacts of large data-center projects. Councilmember Paul Kashmann highlighted the need for clearer zoning language1Why Denver's considering a data center moratorium.
Aurora's rules on noise and setbacks were drafted after community input. City staff stated that these proposed thresholds are stricter than those in similar cities and cited community concerns over vibration from backup generators at a nearby CyrusOne facility2Aurora considers new data center regulations around noise, water and power.
In Eagan, Community Development Director Jill Hutmacher and city spokesperson Sara Horwath described the moratorium as proactive, aimed at studying long-term effects ahead of further large-scale project approvals3Eagan approves one-year moratorium on large data centers.
Outlook
Denver is expected to introduce its moratorium proposal at a council meeting as soon as March 311Why Denver's considering a data center moratorium. Aurora's City Council may vote on the new regulations on March 24, the expiration date of its current moratorium2Aurora considers new data center regulations around noise, water and power. Eagan will conduct studies throughout its moratorium to inform future zoning revisions.
These measures indicate a broader shift toward more regulated and transparent data-center siting, as local governments seek to balance the reliability of digital infrastructure with community impact considerations.
