Potential noise sources that can operate on a 24-hour basis, such as stand-by generators, are required to meet Montgomery County's more restrictive nighttime standard of 55 dBA (A-weighted decibels) at the nearest receiving residential property line. The ordinance does not recognize the term "emergency generator." Therefore, stand-by generators must meet the same standard as any other installation.

Please click on the link below for further information regarding noise and air issues related to stand-by generators.

Online customers wishing to file a complaint regarding a potential noise violation may do so by clicking on the "Create Service Request" button below. Please complete all required fields, and provide any information that will help DEP address the issue in the "Additional Information" box.

DEP investigators will typically contact requestors within 3 business days, although resolution of the issue may take longer depending on the circumstances of the case.