Orange, CA Data Centers & Crypto Mining: Data Center Noise Limits (2026)
Key Facts
- Code
- Muni Code Sec. 8.24.040
- Residential day
- 55 dB(A) (7a-10p)
- Residential night
- 50 dB(A) (10p-7a)
- Tonal/impulsive
- Minus 5 dB(A)
- Measured at
- Residential property
Summary
The City of Orange caps fixed-source noise at any residential property: an hourly average of 55 dB(A) from 7 a.m. to 10 p.m. and 50 dB(A) overnight, under Municipal Code Section 8.24.040. Data-center chillers, generators, and cooling equipment must comply.
The following noise standards for fixed noise sources, unless otherwise specifically indicated, shall apply to all residential property: Table 8.24.040 Exterior Noise Standards ... Hourly Average (Leq) 55 dB(A) 7:00 a.m.-10:00 p.m. 50 dB(A) 10:00 p.m.-7:00 a.m.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4796775; v10 updated 2026-01-27).
Full Breakdown
Chapter 17.20's noise standard (Section 17.20.270) directs all industrial uses to Chapter 8.24. Section 8.24.040 sets exterior standards for fixed noise sources measured at residential property: hourly-average 55 dB(A) daytime (7 a.m.-10 p.m.) and 50 dB(A) nighttime (10 p.m.-7 a.m.), with maximum levels of 70 and 65 dB(A). The Code defines a fixed noise source to include generators, air conditioners, refrigeration, compressors, and fans - the exact equipment a data center runs. Each limit drops 5 dB(A) for tonal or recurring impulsive noise, which the Code illustrates with cyclical generator noise. The standards protect residential receivers; the City sets no numeric limit for industrial receivers.
Violations & Fines
Fixed-source noise over the Section 8.24.040 limits at a residential property is unlawful and enforced by the City through citations, and can breach noise conditions placed on a conditional use permit.
Frequently Asked Questions
How loud can a data center be in the City of Orange?
What noise rule covers a data center's generators in Orange?
Sources & Official References
Other rules in Orange
California rules heatmap·Compare Orange to another location·View the California data centers & crypto mining overview
See something wrong?
Help us keep this page accurate. If you notice an error or outdated information, let us know.
Data Center Noise Limits in Nearby Cities
How other cities in Orange County handle data center noise limits.