The Bay Area Air Quality Management District (BAAQMD) is the regional agency that investigates odor complaints. If you smell an odor, you should call BAAQMD’s toll free hotline: (800) 334-ODOR or (800) 334-6367. There is also an online complaint form. You may call this number at anytime. Be sure to make the complaint immediately so the inspector can begin to trace the odor. It is important to provide facts so an inspector may contact you and discuss your observation.
For compost odor complaint, after calling BAAQMD, use this web form to file a complaint:
Read more on our odor reporting page.