The San Mateo County web site is currently being upgraded for an improved user experience. The County Home page and a few departments are implementing the new "look and feel" along with an improved search and other new features. Please be aware that a number of departments will continue to retain the former user interface during this transition period.

How to Register Your Complaints

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Report any of the following emergency situations by calling (650) 372-6200: Food poisonings Sewage spills from broken piping or septic systems Hazardous materials spills or abandoned containers Register your complaint on the Environmental Health Complaint System for the following types of complaints by calling (650) 599-1112, or by filling in our Online Complaint Form. Garbage accumulation (junk, debris, yard waste, decaying food) Animal wastes (feces) Poor housing conditions including: Leaking roofs Mold and mildew Faulty plumbing Inadequate heating Electrical problems Insects (including cockroaches, bees, ticks, flies, lice) Cleanliness or improper food handling at food establishments Noise complaints in the Unincorporated area The City of San Mateo and the City of San Carlos respond to the above housing related complaints within their city limits. Call City of San Mateo (650) 522-7150 and City of San Carlos (650) 802-4100. City/County Code Enforcement These organizations enforce local building and community ordinances Other agencies that may be of assistance Agency Description of Services Phone City of San Mateo The City of San Mateo responds to all housing related complaints within the city limits. 377-3366 San Mateo County Mosquito and Vector Control District Controls mosquito and vector problems throughout San Mateo County 344-8592 San Mateo County Agriculture Weights and Measures Information about pesticides, termites and pesticide applicators 363-4700 The Peninsula Humane Society Responds to complaints about barking animals and dead domestic animals 340-8200 California Dept. of Health Services - Shellfish Quarantine Provides information about shellfish that are under quarantine 510/540-2605 California Dept. of Health Services - Asbestos Provides information about asbestos and regulates contractors who provide removal services 510/540-2122 Bay Area Air Quality Management District Responds to complaints about air pollution 1-800-334-ODOR