Iron County, UT Data Centers & Crypto Mining: Data Center Noise Limits (2026)

Section 17.37.030(B)(5) sets three separate noise ceilings for an operating data center or data center power plant, and requires adequate setbacks be built into the project to meet them. Fifty-five dBA is the limit measured at the property line of any neighboring residentially zoned lot. A tighter fifty dBA nighttime limit applies at any existing neighboring residence between nine p.m. and seven a.m. A sixty-five dBA limit applies at the project's own boundary line, but that one can be raised if the owner of an affected neighboring property voluntarily agrees in writing to a higher standard.

Any such waiver has to specify the exact noise standard being modified and how much, and it must take the form of a legally binding contract or easement between the landowner, including future assignees, and the data center or power plant developer, running for the life of the project; the agreement must be filed with the county recorder when the conditional use permit issues. Section 17.37.050(L) requires the conditional use permit application to include enough noise information to demonstrate compliance with these thresholds before the county approves siting, and Section 17.37.030(B)(3) ties the noise limits back to the setback standards, since setbacks are the primary tool the ordinance expects developers to use to hit the dBA numbers rather than aftermarket sound mitigation.