Waltham enforces decibel limits based on state DEP policy, with 10 dBA above ambient as the threshold at property lines in all zones.
Waltham does not maintain a standalone municipal decibel table but adopts the Massachusetts DEP Noise Policy 90-001 benchmark. Noise cannot exceed 10 dBA above ambient background levels at the property line, and cannot produce pure tones exceeding ambient. Typical ambient readings in residential Waltham range from 40 to 50 dBA at night. Industrial areas near Second Avenue may have higher ambient. Enforcement requires sound level metering by Waltham Health or MassDEP. Short impulsive sounds like hammering are typically exempt. Residents near the Prospect Hill and Cambridge Reservoir borders report lower ambient levels.
Contact your local code enforcement office for specific penalty information.
Waltham, MA
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Waltham requires building permits for fences over 6 feet, around pools, and in some historic districts, with a straightforward application process.
Waltham, MA
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Side-by-side rule comparisons with other cities in Middlesex County.
See how other cities in Middlesex County handle decibel limits.
See how Waltham's decibel limits rules stack up against other locations.
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