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The County of San Mateo has added a translation feature developed by Google Translate to assist web visitors in understanding information on this website in a variety of foreign languages. Please be aware that Google Translate, a free third party service which the County does not control, provides automated computer translations that may not give you an exact translation. The County cannot guarantee the accuracy of translations through Google Translate so translations should not be considered exact and only used as a rough guide. Anyone relying on information obtained from Google Translate does so at his or her own risk. The County disclaims and will not accept any liability for damages or losses of any kind caused by the use of the Google Translate feature.

sunset view from San Mateo County hills to ocean
STUDIES
Solving for tomorrow.

Studies

The Sustainability Department has conducted sustainability studies to explore potential improvements in the county.

Sustainability Studies

Prioritizing community needs.

Crosswalk at an intersection in North Fair Oaks

North Fair Oaks Bicycle and Pedestrian Railroad Crossing and Community Connections Study

The County of San Mateo conducted this study to assess the potential for a pedestrian and bicycle railroad crossing over or under the Caltrain tracks, making it easier to walk and bike in North Fair Oaks and part of adjacent Redwood City. For updates on active transportation in unincorporated county communities, visit the Department of Public Works website.

View Final Report (PDF)

Ver Informe Final (PDF)

Final Study Appendices (PDF)

Coleman Ringwood Transportation Study public surveys on clipboards at event table

Coleman and Ringwood Avenues Transportation Study

The purpose of the Coleman and Ringwood Avenues Transportation Study was to explore potential long-term, permanent solutions for pedestrian and bicyclist street improvements along Coleman and Ringwood Avenues in unincorporated San Mateo County and Menlo Park.

View Final Report (PDF)

Pigeon Point Lighthouse in Pescadero, California

South Coast Sea Level Rise Risk and Solutions Study

This study evaluates the impacts of sea level rise on San Mateo County’s South Coast.

Learn More

View Final Report (PDF)

aerial view of San Mateo County and San Francisco Bay

San Mateo Plain Groundwater Basin Assessment

The Sustainability Department and the Environmental Health Services division of San Mateo County Health jointly completed a groundwater basin assessment of the San Mateo Plain Subbasin to assess the groundwater resources and current condition of the subbasin; and identify potential groundwater management strategies. 

Learn More (PDF)

The Latest News & Events

Free Tire Recycling Drop-Off Event @ Pescadero High School
Apr
11
Free Tire Recycling Drop-Off Event @ Pescadero High School

The County of San Mateo Sustainability Department is hosting a free tire recycling drop-off event for San Mateo County residents. There is a limit of 9 passenger or light truck tires per vehicle, as required by state law. Tires accepted at this event must be size R19.5 or smaller, with or without rims. Please ensure the tires are deflated. Tires from commercial, auto repair, and/or salvage businesses will not be accepted.

  • Location: Pescadero High School, 360 Butano Cutoff, Pescadero
  • Date:  April 11, 2026
  • Time: 10:00 AM – 2:00 PM
  • Collector: San Jose Conservation Corps

Questions?

  • Call 888-442-2666

Residents must provide proof of residency in San Mateo County (e.g., driver’s license, utility bill, garbage collection bill, etc.).

For larger truck tires (tractor, truck etc.) contact the Sustainability Department at 888-442-2666 for recycling location information or visit www.recyclestuff.org.

LEARN MORE
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2026 Earth Month Events

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