Coweta County, GA Data Centers & Crypto Mining: Data Center Noise Limits (2026)
Key Facts
- Nighttime limit (10pm-7am)
- 5 dB(A) above pre-construction ambient
- Daytime limit (7am-10pm)
- 10 dB(A) above pre-construction ambient
- Measured at
- Residential property boundary line
- Pre-construction survey
- Minimum 72-hour monitoring period
- Generator testing window
- Weekdays 9am-5pm, no federal holidays
- Governing section
- Zoning Ord. § 191(12)(g)
Summary
Coweta County caps data center noise at 5 dB(A) above pre-construction ambient levels at night and 10 dB(A) above ambient during the day, measured at the residential property boundary, and requires a 72-hour pre-construction noise survey under Zoning and Development Ordinance Sec. 191(12)(g).
g.Noise.(i)Noise survey. Prior to the issuance of a land disturbance permit, the applicant shall engage with a noise and acoustical consultant to perform a pre-construction ambient noise survey...Measurements should be taken over a minimum period of 72-hours.(ii)Nighttime. Between 10:00 p.m. and 7:00 a.m., the data center shall not generate noise that persists for more than 60-seconds that is in excess of 5dB(A) above the pre-construction ambient noise level when measured at the property boundary line shared with a residentially zoned property.(iii)Daytime. Between 7:00 a.m. and 10:00 p.m., the data center shall not generate noise that persists for more than 60-seconds that is in excess of 10dB(A) above the pre-construction ambient noise level when measured at the property boundary line shared with a residentially zoned property.(iv)Testing of backup generators is limited to weekdays during the hours between 9:00 a.m. and 5:00 p.m. and shall not occur on federal holidays.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 40).
Full Breakdown
Before a data center can obtain a land disturbance permit, Section 191(12)(g) requires the applicant to hire an independent noise and acoustical consultant to run a pre-construction ambient noise survey at any noise-sensitive residential property boundary line. 4, over a minimum 72-hour monitoring period. The resulting report, including predicted noise impact from the project, must be approved by the community development director and reviewed by an independent firm the county hires before any land disturbance permit is issued. , it cannot exceed ambient by more than 10 dB(A) for longer than 60 seconds.
and is barred on federal holidays, though generators may exceed the normal noise caps during an actual emergency power outage. If county officials determine a noise complaint has merit, Section 191(12)(g)(vi) authorizes written notice to the property owner ordering corrective action, and treats a continuing violation as grounds for further enforcement action, including legal remedies, without requiring the written notice as a precondition.
Violations & Fines
Generating sustained noise, lasting more than 60 seconds, that exceeds 5 dB(A) above pre-construction ambient levels at night or 10 dB(A) above ambient during the day at a residential property line violates Section 191(12)(g). Coweta County can issue written notice ordering corrective action and, for a continuing violation, pursue further enforcement including legal remedies; running backup generators outside the permitted weekday 9:00 a.m.-to-5:00 p.m. testing window is a separate violation.
Frequently Asked Questions
How loud can a Coweta County data center be at night?
Does a data center have to measure noise before it's built?
Can data center backup generators run whenever they want?
Sources & Official References
Other rules in Coweta County
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