SSMC is a public charity nonprofit organization with 501(c)(3) status, so your contributions are tax-deductible to the full extent allowed by law. Our EIN is 48-1265207.

You can donate on this website or send a check made out to “SSMC” to: Sustainable San Mateo County, 2955 Campus Drive #110, San Mateo, CA 94403. Please let us know if your employer will match your donation. For more information, call us at 650-918-1992 or email

Donate via AmazonSmile and eScrip

AmazonSmile. When you set up a “Smile” account on Amazon, the company donates 0.5 percent of every sale to your favorite charitable organization. Just go to and choose Sustainable San Mateo County from the list of charitable organizations. You must navigate to to activate your donations each time you shop on Amazon.

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This service partners with merchants who give back a percentage of purchases you make to the organizations you care about. Purchases are tracked through registered cards (store loyalty, credit/debit). To set up donations via eScrip, go to, set up a free account and select Sustainable San Mateo County as the organization you wish to support.

Then register the credit card(s) that you usually use for checkout, or your merchant Community Card. For some merchants, you only need to register your email and phone numbers.  Once you have an account, you can click on “Where to Earn” to see stores that honor the eScrip program and sign up for the ones you patronize.

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