If you have drug-related information regarding an incident that is in-progress at this moment, and can be viewed and/or dealt with by a uniformed police officer, please call the San Mateo Police dispatcher at (650) 522-7700, and report it as a crime in progress.
If you have information relating to drug-related criminal activity that is not in-progress, or is in-progress but cannot be viewed and/or dealt with by a uniformed police officer, please call the San Mateo Police Department's Narcotics Hoteline at (650) 522-7690. If you reach a recorder and want to be contacted, please leave a call-back number and your name.
If you prefer not to be contacted, you may also call the "Secret Witness" number, which is (650) 522-7676 and leave anonymous information.
The San Mateo County Narcotics Task force deals with drug-related problems outside the city limits and jurisdiction of the City of San Mateo. If your information applies to these areas, please call them at (650) 573-3991 to leave a message.