Delaware County sets no decibel ordinance. Pennsylvania fixes motor-vehicle decibel limits statewide (67 Pa. Code § 157.11), while general property-line decibel limits, where they exist, are set by each municipality.
There is no countywide decibel law. For vehicles, the state's PennDOT regulation 67 Pa. Code Section 157.11 sets fixed maximum sound-level readings measured 50 feet from the center of the travel lane, ranging by category and speed. For everyday residential noise, many Delco municipalities use an audibility test (e.g., Middletown's 100-foot rule) rather than a decibel meter, though some townships adopt property-line decibel tables. Because the residential threshold is municipal, the number that applies to your yard depends on your borough or township. Consult your local noise chapter to learn whether it uses decibels or an audibility standard.
Exceeding the state vehicle limits is a summary traffic offense. Municipal decibel or audibility violations carry local fines (Middletown up to $600 per offense).
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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See how Delaware County's decibel limits rules stack up against other locations.
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