8 county-level rules, plus city-specific rules for 5 cities in Middlesex County, Massachusetts.
Verified from official government sources
Middlesex County has no operational county government - it was abolished July 11, 1997 under M.G.L. c. 34B - so there is no countywide noise ordinance. Massachusetts has no statewide decibel limit either; quiet hours are set by each city/town under home rule. The state baseline is 310 CMR 7.10 (MassDEP Noise Pollution Policy), which prohibits any source from causing sound that exceeds the ambient (background) level by more than 10 dB(A) at the property line of the source, or that produces a pure tone condition. In Middlesex County's largest cities, Cambridge Code Ch. 8.16 sets quiet hours from 10:00 p.m. to 7:00 a.m., Lowell Code Ch. 215 prohibits unreasonable noise from 11:00 p.m. to 7:00 a.m., and Newton Code Ch. 20 sets the period 10:00 p.m. to 7:00 a.m. weekdays.
Middlesex County treats persistent barking as a nuisance. Animal control handles complaints. Dog licensing required statewide (MGL c.140 §155).
Middlesex County has no unified leaf blower ordinance. Regulations are set by individual cities and towns such as Cambridge, Newton, Arlington, and Lexington, which have strong restrictions on gas-powered units.
MGL Part I, Title VII, Chapter 40, Section 21 — By-laws of towns; purpose (clause 22 — noise control)
Section 21. Towns may, for the purposes hereinafter named, make such ordinances and by-laws, not repugnant to law, as they may judge most conducive to their welfare, which shall be binding upon all inhabitants thereof and all persons within their limits. They may, except as herein provided, affix penalties for breaches thereof not exceeding three hundred dollars for each offense, which shall en...
Amplified music in Middlesex County is regulated by individual city and town bylaws. Most communities prohibit amplified sound audible at property lines after 10pm or 11pm on weekends.
Aircraft noise in Middlesex County comes from Hanscom Field (Bedford), Logan International flight paths, and Laurence G. Hanscom Air Force Base. FAA preempts local noise regulation of aircraft in flight.
Industrial noise in Middlesex County is regulated by 310 CMR 7.10 (the Massachusetts DEP noise policy) plus local bylaws. The state rule prohibits industrial sources from exceeding ambient by more than 10 dBA.
Middlesex County follows Massachusetts 310 CMR 7.10 which caps sound at 10 dBA over ambient at property lines. Many cities add hard numeric limits of 65 dBA day / 55 dBA night in residential zones.
Outdoor music events in Middlesex County require a local entertainment or one-day license issued by the city/town clerk or licensing authority. Most communities cut off outdoor music by 10pm weekdays.
5 cities in Middlesex County have their own noise ordinances rules. Each link goes to that city's dedicated page with code citations.
9 verified rules • Aircraft Noise, Amplified Music & Events
9 verified rules • Aircraft Noise, Amplified Music & Events
9 verified rules • Aircraft Noise, Amplified Music & Events
9 verified rules • Aircraft Noise, Amplified Music & Events
9 verified rules • Aircraft Noise, Amplified Music & Events
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