Showing ordinances that apply to Bethesda, MD
Bethesda is an unincorporated community (population 68,056) in Montgomery County, Maryland. Because Bethesda is not an incorporated city, it does not have its own municipal code. Instead, Montgomery County ordinances apply directly to properties here. The industrial noise rules below are the ones that govern your area.
Montgomery County regulates industrial and commercial noise under Chapter 31B with decibel limits at property boundaries. Industrial zones adjacent to residential areas face stricter standards. The Department of Environmental Protection conducts noise monitoring for persistent complaints.
MoCo Code Chapter 31B establishes noise standards for industrial and commercial operations, particularly where they adjoin residential zones. The county uses property-line decibel measurements to determine compliance, with lower limits applied when industrial or commercial sound crosses into residential areas. Continuous noise from HVAC systems, generators, compressors, loading docks, and manufacturing equipment must comply with both daytime and stricter nighttime standards. The Department of Environmental Protection conducts noise monitoring using calibrated equipment when chronic complaints are received. Montgomery County zoning regulations under Chapter 59 also address noise as part of conditional use approvals for industrial and commercial operations near residential zones. The I-270 technology corridor and areas around White Flint, Germantown, and Shady Grove have seen noise complaints from data centers and mixed-use developments. Maryland Environment Article Title 3 provides state-level authority that supplements county enforcement.
Industrial noise violations under Chapter 31B: civil citations with fines up to $1,000 per day. Persistent violations may result in injunctive relief or conditional use revocation.
See how Bethesda's industrial noise rules stack up against other locations.
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