Waukesha, WI Noise from Specific Sources: Generator Noise (2026)

18(6)(l) is Waukesha's specific noise standard for Mobile Food Vendors: any electrical generator used to power the vending unit must be mounted on the vendor itself, not set up as a separate unit on the ground or in a trailer, and the sound of that generator running cannot exceed 70 dB(A) sound pressure level measured from 50 feet away. The same section separately bans the use of any loudspeaker on the exterior of a Mobile Food Vendor under (6)(i), so amplified music or announcements aimed at drawing customers are off-limits regardless of decibel level.

m. to midnight on Friday and Saturday, ending earlier if tied to a City-sponsored event, so the generator limit applies throughout whatever hours a truck is legally running rather than only at night. 18(6)(f) gives the City authority to order the vendor to relocate or suspend operations on the spot, on top of whatever forfeiture applies for the underlying violation.