Pomona, CA Data Centers & Crypto Mining: Data Center Noise Limits (2026)
Key Facts
- Code
- City Code Sec. 18-311
- Single-family home
- 60 day / 50 night dB(A)
- Industrial limit
- 70 dB(A) any hour
- Commercial limit
- 65 day / 60 night
- Measured at
- Receiving property line
Summary
Pomona's noise ordinance, City Code Sec. 18-311, caps exterior sound at the receiving property line by zone: single-family homes 60 dB(A) day and 50 dB(A) night; commercial 65/60; industrial 70 dB(A) at any hour. Data-center cooling and generators must meet the limit for whichever property they reach.
It shall be unlawful for any person at any location within the incorporated area of the city to create any noise or to allow the creation of any noise on property owned, leased, occupied or otherwise controlled by such person which causes the noise level, when measured on any other property, to exceed the following
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: City Code: Supplement 31).
Full Breakdown
Pomona's Noise and Vibration Control ordinance, City Code Sec. 18-311, assigns each property a noise zone and sets exterior limits measured at any point on the affected property. Zone 1 single-family residential is 60 dB(A) from 7 a.m. to 10 p.m. and 50 dB(A) overnight; Zone 2 multifamily 65/50; Zone 3 commercial 65/60; Zone 4 industrial and Zone 5 traffic corridors 70 dB(A) at any hour. At a boundary between zones the lower standard governs. Because data-center cooling runs continuously, Sec. 18-311(e) compares the measured level directly against the receiver's limit - the 50 dB(A) residential night floor binds where an industrial site abuts homes.
Violations & Fines
Noise over the Sec. 18-311 limits is a public nuisance and a misdemeanor or infraction, abatable by injunction and lien, and enforced by the Pomona Police against the offending property.
Frequently Asked Questions
How loud can a data center be in Pomona?
What noise rule protects homes near a Pomona data center?
Sources & Official References
Other rules in Pomona
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