Events

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All Events (30)

Date range
April 26, 2026
Sunday

  • Earth Day 2026 in Lafayette

  • Apr 26, 2026 from 11:00am to 2:00pm
  • Location: Lafayette Plaza Park
  • Description:

    Sustainable Lafayette will be hosting a free Earth Day Festival to celebrate our beautiful town and local environment. Lafayette Earth Day will be April 26, 11am-2pm, at the Plaza Downtown (3530 Plaza Way). Activities will include family-friendly act

  • Created by: Sustainable Contra Costa
April 27, 2026
Monday

  • Too Good to Waste: "Toilet Rewind"

  • Apr 27, 2026 from 12:00pm to 3:00pm
  • Location: Online webinar
  • Description:

    Get ready to peek into the fascinating and little-known past when city dwellers kept their local waters clean by recycling and reusing poop. We’ll visit sand toilets of ancient Egypt, earthen-plaster toilets of the Mali empire, nutrient recycling sys

  • Created by: Sustainable Contra Costa
May 1, 2026
Friday

  • Greywater Design Mastery course (online)

  • May 1, 2026 from 8:00am to 10:00am
  • Location: Online webinar
  • Description:

    Design a professional greywater system for your home (or your client’s) to save water and grow a beautiful landscape.

    Greywater Design Mastery is a comprehensive greywater program to teach you how to design professional, well-functioning greywater ir

  • Created by: Sustainable Contra Costa
 

  • Free Virtual Worm Composting Workshop

  • May 2, 2026 from 10:00am to 12:00pm
  • Location: Online webinar
  • Description:

    Worm castings make great fertilizer! In this free online workshop you’ll learn how to create your own worm compost. Vermicomposting (“vermi” is Latin for “worm”) is the process of using worms to break down organic food waste into nutrient-rich soil.

  • Created by: Sustainable Contra Costa
 

  • Concord Spring Fest

  • May 2, 2026 from 12:00pm to 7:00pm
  • Location: Todos Santos Plaza, Concord
  • Description:
    The 5th annual Bay Area SpringFest is coming to Todos Santos Plaza in charming, historic Downtown Concord SATURDAY, May 2, celebrating spring in the Bay Area with music, food, children's activities and exhibitors featuring arts & crafts, jewelry, art
  • Created by: Sustainable Contra Costa
May 9, 2026
Saturday

  • Ridge-to-Ridge Challenge

  • May 9, 2026 from 9:00am to 1:00pm
  • Location: Walnut Creek Open Space, Shell Ridge
  • Description:

    The Ridge-to-Ridge Challenge is an annual fundraiser supporting Sustainable Contra Costa and its youth program, Sustainable Leaders in Action (SLIA). Each year, high school and college students collaborate to raise awareness about climate issues and

  • Created by: Sustainable Contra Costa
May 16, 2026
Saturday

  • Repair Workshop - Concord

  • May 16, 2026 from 10:30am to 1:30pm
  • Location: Willow Pass Community Center, 2748 E Olivera Rd, Concord, CA 94519
  • Description:

    Get a well-loved item fixed free!

    May 16th 2026 Saturday 10:30 am -1:30pm

    Repair coaches will be on hand to help with broken items such as

    • Jewelry         
    • Electronics             
    • Toys         
    • Lamps
    • Clothing           
    • Small Household items     
  • Created by: Ozge Altunsoy