Connecticut Noise Laws: Quiet Hours, Decibel Limits and Penalties

Connecticut regulates noise at three levels. Making unreasonable noise "with intent to cause inconvenience, annoyance or alarm, or recklessly creating a risk thereof" is disorderly conduct, a class C misdemeanor punishable by up to three months in jail and a $500 fine (Conn. Gen. Stat. 53a-182, 53a-36, 53a-42), or the lesser infraction of creating a public disturbance (53a-181a). State noise regulations (RCSA 22a-69) set decibel limits for buildings and other stationary sources, including a 45 dBA nighttime limit (10 p.m. to 7 a.m.) for noise from a Class A or Class B zone into a Class A zone, but they do not reach vehicles and they exempt construction and, from 7 a.m. to 9 p.m., muffled lawn equipment. Quiet hours for parties, music and construction are set by each town's noise ordinance, which must be at least as stringent as the state plan (22a-73), and the state environmental agency says your first contact for a noise problem is your local government official. To compare other states, see our guide to noise ordinance laws by state.

Information last verified on 2026-10-10. This article has not been reviewed by a licensed lawyer.

Jurisdiction scope: This article covers Connecticut state law: the disorderly conduct and public disturbance statutes and their penalties (Conn. Gen. Stat. 53a-181a, 53a-182, 53a-27, 53a-36, 53a-42, 51-164m, 51-164n); the Noise Pollution Control Act (chapter 442, 22a-67 to 22a-76) and the state noise regulations (RCSA 22a-69-1.1 et seq.); the vehicle noise statutes (14-80, 14-80a, 14-80h); municipal noise powers (7-148, 7-149c); the right-to-farm statute (19a-341); and the state public nuisance action (19a-343). Statute text is the current edition published by the Connecticut General Assembly, with the 2026 amendment of 14-80 by Public Act 26-63. It does not cover the text of any town noise ordinance, aircraft or workplace noise, lease terms, or the law of other states.

What Connecticut noise law covers

Most noise rules a Connecticut resident runs into are local. The General Assembly has given towns the power to adopt noise ordinances, and the state's own regulations exempt several of the noise sources people complain about most. What the state itself supplies is:

• a criminal rule against unreasonable noise made to annoy or alarm (53a-182 and 53a-181a);
• decibel limits for noise that crosses a property line from a stationary source (RCSA 22a-69);
• vehicle equipment and noise rules (14-80, 14-80a, 14-80h); and
• the legal framework that town noise ordinances must fit within (22a-73).

Disorderly conduct and creating a public disturbance

The criminal rule is disorderly conduct. Conn. Gen. Stat. 53a-182 provides:

"A person is guilty of disorderly conduct when, with intent to cause inconvenience, annoyance or alarm, or recklessly creating a risk thereof, such person: ... (3) makes unreasonable noise; ... (b) Disorderly conduct is a class C misdemeanor."

The mental state is part of the offense. The noise must be unreasonable, and the person must either intend to cause inconvenience, annoyance or alarm or recklessly create a risk of it.

A class C misdemeanor carries "a term not to exceed three months" (53a-36(3)) and a fine in "an amount not to exceed five hundred dollars" (53a-42(3)).

Section 53a-181a, creating a public disturbance, uses the same mental state and the same words, "makes unreasonable noise," and then provides: "Creating a public disturbance is an infraction." Under 53a-27(a), "An offense, for which the only sentence authorized is a fine, is a violation unless expressly designated an infraction," and 53a-181a is expressly designated an infraction.

What a public disturbance infraction costs

Section 53a-181a does not state a dollar amount. The Judicial Branch's mail-in infractions schedule, effective October 1, 2026, sets the fine for creating a public disturbance at $60, with a total amount due of $103 once the fees and costs set by statute are added.

The scheduled fine must fall within the range in Conn. Gen. Stat. 51-164m: "no fine established in accordance with the provisions of subsection (a) of this section may be less than thirty-five dollars or more than ninety dollars."

Paying an infraction by mail has a specific legal effect under 51-164n(c): "Such payment shall be considered a plea of nolo contendere and shall be inadmissible in any proceeding, civil or criminal."

Connecticut's state noise regulations and decibel limits

The Noise Pollution Control Act begins with a policy statement. Conn. Gen. Stat. 22a-67 declares that "each person has a right to an environment free from noise that may jeopardize his health, safety or welfare," and that "The policy of the state is to promote an environment free from noise that jeopardizes the health and welfare of the citizens of the state of Connecticut."

The Act gives the DEEP commissioner discretion, not a duty, to run a noise program: "The commissioner may develop, adopt, maintain and enforce a comprehensive state-wide program of noise regulation," which may include ambient noise standards for stationary noise sources (22a-69(a)).

A "stationary noise source" is "any building, structure, facility or installation which emits or may emit noise, beyond the property line on which such source is located, except any on-site recreational or sporting activity which is sanctioned by the state or local government or farming equipment or farming activity" (22a-68(g)).

Day and night under the regulations

The regulations, RCSA 22a-69-1.1 et seq., define "daytime" as "7:00 a.m. to 10:00 p.m. local time" and "nighttime" as "10:00 p.m. to 7:00 a.m. local time" (RCSA 22a-69-1.1(h), (n)).

Zone limits

RCSA 22a-69-3.5 sets the maximum level a source in one noise zone may emit into each neighboring zone. Class A is the residential zone. "Levels emitted in excess of the values listed above shall be considered excessive noise."

Source: RCSA 22a-69-3.5(a) to (c). The official regulation page notes subsection (c) was republished on August 26, 2026 to correct an error.

Two other limits apply. "No person shall cause or allow the emission of impulse noise in excess of 80 dB peak sound pressure level during the nighttime to any Class A Noise Zone" (22a-69-3.2(a)). And no one may operate an intrusion alarm that, from activation of the audible signal, sounds for longer than "ten minutes when attached to any vehicle or thirty minutes when attached to any building or structure" (22a-69-5.1).

What the regulations exclude

Several common noise sources fall outside the state limits. Under RCSA 22a-69-1.7, the regulations "shall not apply to":

• "The unamplified sounding of the human voice";
• "The unamplified sound made by any wild or domestic animal";
• "Farming equipment or farming activity"; and
• "Sound created by any mobile source of noise."

RCSA 22a-69-1.8 exempts "Construction noise," and exempts "engine-powered or motor-driven lawn care or maintenance equipment" between 7:00 a.m. and 9:00 p.m., "provided that noise discharged from exhausts is adequately muffled to prevent loud and/or explosive noises therefrom."

So the state's nighttime standard reaches noise from stationary sources, but barking dogs, loud voices, cars and construction are left to other rules. Chapter 442 mentions construction hours only as a subject a town's own ordinance may cover (22a-73(b)(5)).

Who enforces the state limits

Chapter 442 makes it unlawful to violate the chapter or its regulations, and to "allow the creation, continuance or maintenance of any noise, or allow the installation, use or operation of any stationary noise source" on property a person owns or leases that violates them (22a-74(a), (c)). The commissioner "may set schedules and assess civil penalties for any violation of this chapter" under 22a-6a and 22a-6b (22a-75).

The regulations treat each day a violation continues past the correction period in an order as a separate violation, and they direct "Qualified personnel of the Office of Noise Control" to investigate "with or without complaints" (RCSA 22a-69-7.4(b), (c)).

In practice, the state environmental agency sends residents elsewhere. The Department of Energy and Environmental Protection's noise control page states: "The first point of contact for the resolution of local noise issues is your local government official. In some towns the local Department of Health can assist, while in others you will need to contact Town Hall to identify the appropriate official." The same page says it "is kept for historical reference and information."

Town noise ordinances and quiet hours

Quiet hours and most decibel limits a resident deals with come from the town. Conn. Gen. Stat. 22a-73(b) provides that "Any municipality may adopt, amend and enforce a noise control ordinance which may include the following: (1) Noise levels which will not be exceeded in specified zones or other designated areas; ... (5) noise level restrictions applicable to construction activities, including limitation on on-site hours of operation."

The ordinance must meet the state floor but may go further. Under 22a-73(c), "Any such municipal noise control ordinance shall be at least as stringent as any state noise control plan, including ambient noise standards, adopted pursuant to section 22a-69," and "any municipality may adopt more stringent noise standards than those adopted by the commissioner."

Older sources say DEEP must approve a town's noise ordinance. That is no longer the rule: DEEP's page states, "Effective July 1, 2022, municipalities are no longer required to have their ordinances reviewed and approved by DEEP."

Towns also hold general police powers over noise. Among the municipal powers in Conn. Gen. Stat. 7-148 are the powers to "Preserve the public peace and good order, prevent and quell riots and disorderly assemblages and prevent disturbing noises," to "Keep streets, sidewalks and public places free from undue noise and nuisances," and to "cause the abatement of any nuisance at the expense of the owner or owners of the premises on which such nuisance exists."

Under 7-148(c)(10)(A), a town may set penalties for violating its ordinances "not to exceed two hundred fifty dollars, unless otherwise specifically provided by the general statutes." An ordinance enforced by citation requires a written warning before the citation is issued, except for ordinances on dirt bikes, all-terrain vehicles and mini-motorcycles. The external-speaker ordinance in 7-149c, below, is one statute that provides otherwise.

To find your town's rule, look up its code of ordinances (usually linked from the town website) and search for "noise." Police handle disorderly conduct and public disturbance; for an ordinance problem, DEEP points residents to the local health department or town hall.

Candlewood Lake

On Candlewood Lake, a state officer can enforce the shoreline towns' ordinances: "any environmental conservation police officer of the Department of Energy and Environmental Protection has the authority to enforce the noise ordinance of any municipality that abuts Candlewood Lake on the waters of such lake" (22a-69a).

State campgrounds

At state park and forest campgrounds, DEEP's camping rules state: "Quiet Hours: These are observed between 10:00 p.m. and 7:00 a.m. Reasonable levels of sound may not be exceeded at any time."

In state parks and forests, causing or allowing disturbing noise is an infraction under the park regulations (RCSA 23-4-1(x)); the Judicial Branch schedule lists a $35 fine, $75 total amount due.

Loud cars, exhaust and car stereos

Conn. Gen. Stat. 14-80 sets the equipment rule: "Each motor vehicle and the devices on such vehicle shall be operated, equipped, constructed and adjusted to prevent unnecessary or unusual noise" (14-80(a)). Engines must have "a muffler or mufflers designed to prevent excessive, unusual or unnecessary exhaust noise" (14-80(b)(1)).

Section 14-80(b)(2) bars anyone, including dealers and repairers, from installing or using "a muffler or mufflers lacking interior baffle plates or other effective muffling devices, a gutted muffler, a muffler cutout or a straight exhaust except when the motor vehicle is operated in a race, contest or demonstration of speed or skill as a public exhibition" under 14-164a, "or any mechanical device which will amplify the noise emitted by the vehicle."

The Judicial Branch infractions schedule effective October 1, 2026 lists the muffler and exhaust offenses in 14-80(b) at a $300 fine, $450 total amount due, and the unnecessary-noise offense in 14-80(a) at a $150 fine, $225 total amount due.

The decibel levels under 14-80a are set by regulation under subsection (c), not in the statute itself. For a title 14 infraction, 51-164m(c) sets a range of $50 to $90 for an established fine, and an infraction with no established fine carries $50.

The external-speaker rule is a town option. Section 7-149c(a) lets a municipality that adopts an ordinance under 7-148 "to regulate the operation and use of external speakers attached to a motor vehicle" set the penalties in the table and "provide for the seizure and forfeiture to the municipality of such external speakers."

Loud neighbors: your options

For a noise problem next door, Connecticut law points to four routes:

1. The town. DEEP directs residents to their local government official first, and a town's noise ordinance is where quiet hours usually live (22a-73).
2. Police. Unreasonable noise made to cause annoyance or alarm, or recklessly risking it, can be charged as disorderly conduct (53a-182) or as the infraction of creating a public disturbance (53a-181a).
3. A nuisance claim. Meeting the state regulations does not protect a noise source from a nuisance claim. RCSA 22a-69-1.5 states that "compliance of a source with these Regulations is not a bar to a claim of nuisance by any person. A violation of any portion of these Regulations shall not be deemed to create a nuisance per se." Chapter 442's remedies "are not exclusive and shall be in addition to any other provisions and remedies provided for in any section of the general statutes or which are available under common law" (22a-76).
4. The state public nuisance action, for problem businesses. Under 19a-343(b), "The state has the exclusive right to bring an action to abate a public nuisance" under that section. One trigger is three or more citations for a municipal ordinance violation for "excessive noise on nonresidential real property that significantly impacts the surrounding area, provided the municipality's excessive noise ordinance is based on an objective standard" (19a-343(b), (c)(14)(A)). Residents cannot bring this action themselves.

If the noise comes from a neighbor in the same rental building, the lease and landlord-tenant rules may also matter; see Connecticut landlord-tenant laws.

Farms and shooting ranges

Farms. Conn. Gen. Stat. 19a-341 opens "Notwithstanding the provisions of any general statute or municipal ordinance or regulation pertaining to nuisances to the contrary," and provides that no farming operation "shall be deemed to constitute a nuisance, either public or private, due to alleged objectionable ... (2) noise from livestock or farm equipment used in normal, generally acceptable farming procedures," provided it "has been in operation for one year or more and has not been substantially changed, and such operation follows generally accepted agricultural practices." The protection does not apply "whenever a nuisance results from negligence or wilful or reckless misconduct in the operation" (19a-341(c)).

Shooting ranges. Under 22a-74a(a), the owner, operator or user of "a firing or shooting range operating on October 1, 1998, shall be exempt from criminal prosecution with respect to noise or noise pollution violations and immune from civil liability with respect to noise or noise pollution resulting from shooting activity on such range provided the range was, at the time of its construction or operational approval by the municipality in which it is located, in compliance with the provisions of this chapter and regulations adopted hereunder."

Town decibel limits may not reach those ranges. Under 22a-74a(b), "No standards in a noise control ordinance adopted by any municipality for limiting levels of noise in terms of decibel level which may occur in the outdoor atmosphere shall apply to any firing or shooting range exempted from liability under this section if such standards are inconsistent with the provisions of this chapter or the regulations adopted hereunder." Subsection (c) adds: "This section shall not limit the ability of a municipality to evaluate and regulate any increase in noise attributable to a physical expansion of an existing firing or shooting range."

Fireworks noise is covered separately in Connecticut fireworks laws.

Related pages

• Noise ordinance laws by state
• Connecticut landlord-tenant laws
• Connecticut fireworks laws
• New York noise ordinance laws
• Massachusetts noise ordinance laws

This article provides general legal information about Connecticut law, not legal advice. For advice about a specific situation, contact a lawyer licensed in Connecticut or your town government.

Last updated: 2026-10-10.

Frequently Asked Questions

What are the quiet hours in Connecticut?

Quiet hours come from your town's noise ordinance, which Conn. Gen. Stat. 22a-73 lets towns adopt. The state regulations treat 10 p.m. to 7 a.m. as nighttime and lower the limit for noise from a Class A or B zone into a residential Class A zone to 45 dBA (RCSA 22a-69-3.5).

What is the noise limit in Connecticut at night?

Under RCSA 22a-69-3.5, noise from a Class A or Class B zone into a Class A zone may not exceed 45 dBA from 10 p.m. to 7 a.m., and noise from a Class C zone may not exceed 51 dBA. The limits do not apply to voices, animals, vehicles, farming or construction.

Is making noise a crime in Connecticut?

Making unreasonable noise with intent to cause inconvenience, annoyance or alarm, or recklessly creating a risk of it, is disorderly conduct, a class C misdemeanor with up to 3 months in jail and a $500 fine (Conn. Gen. Stat. 53a-182, 53a-36, 53a-42). The same conduct is also described in 53a-181a, creating a public disturbance, which is an infraction.

Who do I call about a noise complaint in Connecticut?

DEEP says the first point of contact is your local government official, often the local health department or town hall. For a disturbance happening now, local police handle disorderly conduct and public disturbance.

Can my town make stricter noise rules than the state?

Yes. A town noise ordinance must be at least as stringent as the state plan, and any municipality may adopt more stringent standards (Conn. Gen. Stat. 22a-73(c)). Since Public Act 22-143 (2022), the ordinance no longer needs DEEP approval.

Is a loud exhaust illegal in Connecticut?

Vehicles must be equipped and operated to prevent unnecessary or unusual noise, and gutted mufflers, muffler cutouts and straight exhausts are banned outside sanctioned racing events (Conn. Gen. Stat. 14-80). Since October 1, 2026, the fine is $300 for each offense (14-80(g), as amended by Public Act 26-63).

Can I sue a neighbor for noise in Connecticut?

The state regulations say compliance with them is not a bar to a claim of nuisance by any person (RCSA 22a-69-1.5), and chapter 442's remedies are in addition to those available under common law (22a-76). A lawyer licensed in Connecticut can explain how a nuisance claim works.