Decibel Limits: Lowell vs Waltham
How do decibel limits rules compare between Lowell, MA and Waltham, MA?
Lowell and Waltham have similar restriction levels.
Lowell, MA
Middlesex County
Lowell applies the Massachusetts DEP 10-dB-above-ambient standard for objective measurement and uses a plainly-audible test for subjective enforcement.
View full Lowell rules →Waltham, MA
Middlesex County
Waltham enforces decibel limits based on state DEP policy, with 10 dBA above ambient as the threshold at property lines in all zones.
View full Waltham rules →Key Facts Comparison
| Fact | Lowell | Waltham |
|---|---|---|
| Subjective test | Plainly audible at 50 feet | - |
| Objective test | 10 dB(A) above L90 ambient | - |
| State authority | MassDEP Policy 90-001 | - |
| Meter type | ANSI Type 2 sound meter | - |
| Typical ambient | 45-55 dB(A) residential | - |
| Threshold | - | 10 dBA above ambient |
| Residential Ambient | - | 40-50 dBA night |
| Measurement Point | - | Property line |
| Pure Tone Rule | - | Cannot exceed ambient |
| Authority | - | MassDEP Policy 90-001 |
Highlighted rows indicate differences between cities.
Lowell FAQ
Is there a specific nighttime dB limit?
No fixed number; the plainly-audible-at-property-line test effectively caps most residential noise below 50 dB(A) at night.
Can I request a sound measurement?
Yes. Lowell Code Enforcement or MassDEP can be requested to conduct measurements for persistent complaints.
Waltham FAQ
Does Waltham have a fixed dBA cap like 65?
No, it uses the relative 10 dBA above ambient standard.
Can I use my own dB meter?
Yes, but enforcement requires calibrated official measurement.
Compare other topics
See how Lowell and Waltham compare on other ordinance categories.
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