San Mateo enforces stormwater regulations under its NPDES Municipal Permit (San Mateo Countywide Water Pollution Prevention Program). Development creating or replacing 5,000+ sq ft of impervious surface must implement permanent stormwater BMPs. Illegal discharge to the storm drain system is prohibited.
The City of San Mateo participates in the San Mateo Countywide Water Pollution Prevention Program under the regional NPDES Municipal Permit. All new development and significant redevelopment creating or replacing 5,000 or more square feet of impervious surface must implement permanent stormwater Best Management Practices. Common BMPs include bioretention areas, permeable pavement, green roofs, and detention systems. It is unlawful to discharge non-stormwater substances into the city's storm drain system. Common violations include washing vehicles with runoff entering drains, improper chemical disposal, and construction sediment discharge. The city's storm drain system ultimately discharges to San Francisco Bay, making water quality protection critical.
Illegal discharge violates the municipal code and the Clean Water Act. Penalties range from administrative fines to criminal prosecution. State fines up to $10,000 per day for ongoing violations.
San Mateo, CA
San Mateo prohibits nuisance barking under the city's noise ordinance and animal control provisions. Owners must prevent habitual barking that disturbs neigh...
San Mateo, CA
San Mateo experiences aircraft noise from San Francisco International Airport (SFO), located approximately 3 miles north. The city cannot restrict FAA-contro...
San Mateo, CA
San Mateo regulates amplified sound under SMMC Section 7.30.080. Handheld amplified sound equipment cannot exceed 10 watts. All amplified sound must comply w...
San Mateo, CA
San Mateo limits permitted construction to 7 AM–7 PM weekdays, 9 AM–5 PM Saturdays, and noon–4 PM Sundays/holidays. Equipment cannot exceed 90 dB at 25 feet....
San Mateo, CA
San Mateo specifically regulates leaf blower operation under Chapter 10.80 in addition to the general noise ordinance. Leaf blowers must comply with both the...
San Mateo, CA
Fences up to 7 feet in San Mateo generally do not require a building permit if they comply with zoning regulations. Fences over 7 feet require a building per...
See how San Mateo's stormwater management rules stack up against other locations.
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