Office hours: 9:00 am – 4:00 pm EST
As we serve thousands of Volunteers, Students, and NPDES Permittees, our preferred contact is through mail and email. All phone messages, emails, and correspondence received will receive a response; we appreciate your patience as, due to volume, it may take us some time.
Potential non-compliance issues should be reported to your local government or to your state regulatory authority.
107-F East Broadway
Bel Air, MD 21014
To send us general questions or comments please use the form below.