Garden Grove, CA Data Centers & Crypto Mining: Data Center Noise Limits (2026)
Key Facts
- Code
- Muni Code Sec. 8.47.040
- Residential base
- 55 day / 50 night
- Industrial base
- 70 dB(A)
- Exceedance rule
- +5 dB(A) at property line
- Machinery/AC clause
- Sec. 8.47.060(C)
Summary
Garden Grove sets ambient base noise limits by land use: 55 dB(A) daytime and 50 dB(A) overnight at residential property, 70 dB(A) for industrial. Municipal Code Sec. 8.47.040 makes exceeding that base by 5 dB(A) at the property line a violation. Data-center chillers and generators must comply.
This section permits any noise level that does not exceed either the ambient base noise level or the actual measured ambient noise level by 5 dB(A), as measured at the property line of the noise generation property.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4903654; v10 updated 2026-05-12).
Full Breakdown
Garden Grove's Noise Control ordinance (Chapter 8.47) uses an ambient-base-noise-level table in Section 8.47.040. Base limits at the receiving property line are 55 dB(A) for residential use from 7 a.m. to 10 p.m. and 50 dB(A) from 10 p.m. to 7 a.m.; 70 dB(A) for industrial use; 70 dB(A) commercial; and 65 dB(A) for commercial or industrial within 150 feet of residential. A noise is unlawful if it exceeds the base level - or the actual measured ambient level - by more than 5 dB(A) at the property line. Section 8.47.060(C) applies this to any fan, pump, or air-conditioning device, covering a data center's cooling and backup generators. Where a site abuts homes, the 50 dB(A) overnight residential floor controls.
Violations & Fines
Noise exceeding the ambient base level by more than 5 dB(A) at the property line violates Chapter 8.47, enforced by the City Manager and Police Department through citations and abatement.
Frequently Asked Questions
How loud can a data center be in Garden Grove?
What noise rule covers data-center cooling equipment in Garden Grove?
Sources & Official References
Other rules in Garden Grove
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