Events

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

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

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

Local organizations are coming together in Kensington to celebrate Earth Day! Come enjoy hands-on activities for all ages and opportunities to learn and engage on Sunday, April 26th, at Arlington Community Church (52 Arlington Avenue) from 10:00 a.m.

Homeowners. Renters. Property owners. Different paths. One destination.

There is no single pathway to a fossil-fuel-free future. Homeowners, renters, and multifamily property owners all have different budgets, timelines, and building types. What unit

Join El Cerrito community for an Earth Day celebration. The event will feature informational tables from local agencies, including RecycleMore and MCE Clean Energy, as well as community organizations such as the El Cerrito Garden Club, El Cerrito/ Ri

Have you ever seen a food forest? Are you interested in growing your own food or want to replace your lawn with a more sustainable landscape? Join our annual Food Forest Tour! Do not miss out on the chance to tour native plant, pollinator, local comm

The Ruth Bancroft Garden has partnered with Contra Costa Water District and East Bay Municipal Utility District to present a self-guided tour of over 20 inspiring home gardens in Walnut Creek, Pleasant Hill, Lafayette, and Moraga. This tour highlight

Celebrate Earth Day in Pleasant Hill with an evening of environmental awareness and activities. Over a dozen groups will be in attendance with a variety of demonstrations, activities and information all based around Earth Day.  Vendors/activities inc

Learn how to recycle household greywater from showers, sinks and washing machines for irrigation.  As temperatures rise and droughts worsen, greywater reuse can offer an affordable, low-energy solution to keep landscapes green and productive during t

Celebrating John Muir’s 188th birthday, the 56th Anniversary of Earth Day and the National Park Service Centennial, plus the 71st Anniversary of the John Muir Association

Live music, historic re-enactments, dozens of exhibitors.

Admission and parking

The tomato plant sale is back! The Contra Costa Master Gardeners will have many varieties of seedlings for you to take home and grow.

• 70+ varieties of tomatoes, plus peppers, eggplants, squash and more
• All plants are $4.00
• All sales are Visa, Master

From Earth Day to Arbor Day, let's work together to build a stronger, cleaner, more beautiful Antioch! Starting Earth Day, join us as we begin our service to the community. Gather friends and family to brainstorm a beautification project for your hom

During this guided Earth Month tour, you’ll go behind the scenes at Mt. Diablo Resource Recovery and gain rare access to areas most people never see. See firsthand how we collect and process materials, and maximize recycling while minimizing landfill

Join us for our 2026 Earth Day Celebration as the Green Movie Night series presents a screening of the impactful documentary The Story of Plastic.

Presented in collaboration with Sustainable Walnut Creek, this thought-provoking film explores the glob