Murrieta, CA Data Centers & Crypto Mining: Data Center Noise Limits (2026)
Key Facts
- Code
- Dev. Code Sec. 16.30.090
- Home limit
- 50 dB day / 45 night
- Industrial limit
- 70 dB anytime
- Commercial limit
- 60 day / 55 night
- HVAC exemption
- None; unlike the county
Summary
Murrieta's noise ordinance, Development Code Section 16.30.090, caps exterior noise at the receiving property: 45 dB night and 50 dB day at homes, 55/60 at commercial sites, and 70 dB anytime on industrial land. Unlike Riverside County, Murrieta exempts no HVAC equipment, so data-center cooling must comply.
No person shall operate or cause to be operated any source of sound at any location within the city or allow the creation of any noise on property owned, leased, occupied or otherwise controlled by a person that causes the noise level, when measured on any other property to exceed the following exterior noise standards:
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2026 S-23: A Codification of the General Ordinances of the City of Murrieta, California through Ord. 634-26, passed 7-7-2026).
Full Breakdown
Chapter 16.30 of Murrieta's Development Code sets exterior noise standards by receiving noise zone in Table 3-6. Residential property limits are 50 dB daytime (7 a.m.-10 p.m.) and 45 dB nighttime (10 p.m.-7 a.m.); commercial is 60 dB day and 55 dB night; industrial is 70 dB anytime; and noise-sensitive areas 45 dB anytime. Those base limits (Standard No. 1) apply for up to 30 minutes per hour, rising 5 dB for shorter durations. At a boundary between two zones the limit is the arithmetic mean. Critically, Section 16.30.060 lists the exemptions and does not exempt air-conditioning or mechanical equipment - so a data center's chillers, cooling towers, and generators are fully regulated where they reach homes.
Violations & Fines
Noise exceeding the Table 3-6 limits is a Development Code violation. Murrieta code enforcement may issue an abatement notice or citation; a permitted data center also breaches any noise conditions attached to its use permit.
Frequently Asked Questions
How loud can a data center be in Murrieta?
Does Murrieta exempt air-conditioning noise like the county?
Sources & Official References
Other rules in Murrieta
California rules heatmap·Compare Murrieta to another location·View the California data centers & crypto mining overview
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