Norwalk, CT Noise from Specific Sources: Generator Noise (2026)

Norwalk Code § 68-5C(12) gives generators a narrow noise exemption tied to real necessity. Operation of a standby or portable generator is exempt from Chapter 68's limits only when there is a power outage affecting the subject property. ) and last only the minimum duration the manufacturer suggests, with a 60 dBA ceiling at the property line of any affected person during that testing. Outside those prescribed testing hours, or when a generator runs but there is no outage, the general Table 1 limits in § 68-5A apply instead of the exemption.

No person may operate a generator during Nighttime Hours in a Residential Zone unless there is an actual power outage affecting the property, and a generator on a permitted Construction Site is capped at 60 dBA at the property line during Daytime Hours and barred at night unless a permit or variance has been obtained. The provision specifically states the outage exemption does not cover a shutoff caused by nonpayment to the utility, so a generator run because service was cut off for an unpaid bill gets no special treatment. The Noise Control Administrator enforces these limits and can inspect and measure sound from a running unit under § 68-9.