[CC 1970 §17-62; CC 1947 §12-13; Ord. No. 5093 §1, 8-23-1994; Ord. No. 5795 §1, 11-11-2003; Ord. No. 6696, 5-11-2021; Ord. No. 6899, 9-10-2024; Ord. No. 6982, 12-9-2025]
A. 
The following acts, among others, are declared to be loud, unusual, disturbing and unnecessary noises in violation of this Code, but said enumeration shall not be deemed to be exclusive:
1. 
The crying or hawking of newspapers or goods, wares or merchandise between the hours of 9:00 P.M. and 8:00 A.M.
2. 
The playing of any orchestra, radio, phonograph or musical instrument or instruments or singing upon any premises while used for a commercial open air garden, outdoor restaurant or other business conducted in the open air where such premises are located within five hundred (500) feet of any residence or building used or occupied for private family residential purposes between the hours of 10:00 P.M. and 7:00 A.M.
3. 
Construction activity, including, but not limited to, excavation, demolition, alteration, maintenance or repair upon the exterior of any structure or on any property or any such interior activity, that creates noise that can be heard beyond the property line, except between the hours of 7:00 A.M. and 6:00 P.M. weekdays (excluding national holidays) or at such times as are specifically permitted by the City Manager, in writing, on a case-by-case basis taking into consideration the nature, volume and duration of the proposed activity, the times involved and the likelihood for disturbing the peaceful enjoyment of other properties; provided, however, that:
a. 
Construction activity, as described above, performed only by an owner or occupant of residential property on Saturdays and holidays between the hours of 9:00 A.M. and 6:00 P.M. shall not be prohibited; and
b. 
Construction activity performed only by an owner or occupant of residential property on Sundays between the hours of 9:00 A.M. and 6:00 P.M. shall not be prohibited if the level of noise created by the activity cannot be heard beyond the property line of the residence where the work is performed.
4. 
The playing in the open air of tennis, badminton, horseshoes, baseball or other outdoor game within one hundred (100) feet of any residence or building used or occupied for private family residential purposes between the hours of 12:00 Midnight and 8:00 A.M.
5. 
The sounding of any horn or other signal device on any street vehicle for an unnecessary or unreasonable period of time.
6. 
The use of any loudspeaker, drum or other device or instrument for the purpose of attracting attention to a place of business or other premises or to advertise any business.
7. 
The playing of any radio, phonograph or musical instrument in such a manner or with such volume, particularly between the hours of 12:00 Midnight and 8:00 A.M., as to tend to annoy or disturb the quiet or repose of persons in any dwelling, hotel or other type of residence; provided, any such noise which can be distinctly heard at a distance of more than one hundred (100) feet from its source shall be deemed excessive.
8. 
The creation of any excessive or unnecessary noise within one hundred fifty (150) feet of any portion of grounds and premises on which is located a hospital or other institution reserved for the sick or any church or school or other institution of learning or court or other public building, library and the like, while the same are open or in session which unreasonably interferes with the proper functioning of any such place above mentioned, provided conspicuous signs are placed in the public highways indicating quiet zones within which such noises are prohibited. In case of emergency or urgent necessity a permit may be issued by the City Manager for such noises within such zones for limited periods during the existence of such emergency.
9. 
The use of motor-driven outdoor maintenance equipment including lawnmowers, trimmers, chain saws, leaf blowers and like devices prior to 7:00 A.M. and after 6:00 P.M. weekdays and prior to 9:00 A.M. and after 5:00 P.M. Saturdays, Sundays and holidays; provided, however, that this provision shall not apply to:
a. 
The use of snowblowers immediately after a snowstorm or chain saws immediately after a storm that causes tree limbs to fall; and
b. 
The use of motor-driven outdoor maintenance equipment by an owner or occupant of the premises where used between the hours of 7:00 A.M. and 9:00 A.M. on Saturdays and between the hours of 5:00 P.M. and 8:00 P.M. on any day.
10. 
The operation of any generator that exceeds seventy-five (75) decibels, measured in accordance with Section 625.040 of the St. Louis County Noise Control Code as established and enforced by the Noise Abatement Office of the St. Louis County Department of Health, shall be prohibited unless the generator is equipped with appropriate sound-attenuation measures, including, but not limited to:
a. 
An acoustic enclosure or barrier specifically designed to reduce noise output; or
b. 
Anti-vibration mounts and rubber mats or comparable noise-damping materials to reduce structure-borne and ground-borne vibrations.