Lehigh County does not zone or set industrial noise limits. In Allentown, industrial-zone property has a 77 dB(A) limit day and night, and any intrusive source that raises background levels by 10 dB(A) above Table 1 is a noise disturbance.
Industrial and commercial noise is controlled by each municipality's zoning and noise ordinance under the PA Municipalities Planning Code, not by the county. In Allentown, the industrial land-use category (Zones I-1, I-2, I-3) has a Table 1 limit of 77 dB(A) both day and night at the receiving property boundary. Where background sound already exceeds Table 1, an intrusive source causing a 10 dB(A) increase above that background is itself a noise disturbance. The Bureau of Health may require commercial or industrial operators suspected of causing a disturbance to keep operating records and to shut down briefly so background levels can be measured.
Bureau of Health may order abatement within 30 days or seek an injunction. Violation ticket $100; summary conviction $100–$1,000 and/or up to 90 days imprisonment, each day a separate offense.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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See how Lehigh County's industrial noise rules stack up against other locations.
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