Sustainability Open Hours

Tuesdays 9am - 11am

Have questions or want to share comments about sustainability initiatives in Mill Valley or Tiburon? Come speak to the Climate Action Coordinator during virtual open hours! They will operate on a first come first serve basis and be held weekly via Zoom.

Register for the meetings

Free Clothing Swap at the Re-loved and Re-sourced Market

April 27th at the Mill Valley Community Center

Join us for an inspiring day dedicated to sustainable fashion and creativity at the Re-Loved and Re-Sourced Market! This vibrant event brings together a community of fashion enthusiasts, upcycled artists, and eco-conscious shoppers to celebrate the art of recycling, reusing, and upcycling.

This event will feature a free clothing swap where you can update your wardrobe and donate your gently used items.

Want to contribute to the free clothing swap? Check out these opportunities to donate clothes!

(Donations won't be accepted day of the event!)

Happy Earth Month!



April is a time to reflect on how our daily choices impact the planet, and how we can make changes to reduce waste, conserve resources, and protect our environment. Small shifts in our habits can make a big difference! Here are five practical zero waste tips you can adopt this month (and beyond). Want to increase your impact? Chat with your friends about what new habits you’re adopting!

1. Skip Single-Use Plastics

Prevent microplastic pollution and landfill waste by keeping a reusable water bottle, coffee mug, and set of utensils with you when you’re on the go. Say no to plastic bags and bring your own reusable bag when shopping.

2. Compost Your Food Scraps

Composting is a simple way to reduce waste and give food scraps a new life as a nutrient-rich soil additive. Make sure all of your food scraps, yard waste, and paper towels go into your green curbside compost bin. (Don’t have a green compost bin? It’s the law to have access to one at your home, apartment, or business!)

3. Shop Secondhand

From clothing to furniture to electronics, buying used helps keep items out of landfills and reduces demand for new products, which saves energy, resources, and emissions from production. Check out local thrift stores, vintage shops, or online secondhand marketplaces.

4. Repair Before You Replace

Whether it’s mending a piece of clothing, fixing a small appliance, or patching up a piece of furniture, choosing to repair keeps useful materials out of the landfill. Learn basic repair skills like sewing buttons, patching clothes, or fixing small appliances. Zero Waste Marin will be hosting repair fairs throughout Marin County in 2025 - check out the upcoming events

5. Buy in Bulk

Buying in bulk allows you to avoid excessive packaging and minimize the amount of single-use plastic waste. Look for bulk refill stations for items like laundry detergent, soap, and cleaning supplies. (Check out a list of refill options in Marin)

Every small action we take adds up to a big collective impact. Reducing waste, extending the life of products, and minimizing our consumption are powerful ways to protect natural resources and combat climate change. This Earth Month, challenge yourself to adopt one (or more) of these zero waste habits and inspire others to do the same!

Tiburon Earth Day 2025

April 27th 10am - 1pm at Zelinsky Park

This year's family-friendly Earth Day celebration will kick off at Zelinsky Park with live music and fun hands-on activities. Create your own unique 'Pledge for the Planet' with Tiburon's Heritage & Arts Commission to assemble among others in the community. A lively non-motorized parade will commence at 11 a.m. along Tiburon Boulevard downtown to the Angel Island Ferry Deck where local environmentally minded groups like the Marine Mammal Center, Green Team, Richardson Bay Regional Agency, Belvedere-Tiburon Library, and more will be providing exciting ways to learn how to protect our planet.

Make a smoothie on the Safe Routes to School bike blender, learn about our local marine mammals, bike repair, and more!

See event page to learn more

Artists' Reception for the Mill Valley Painted Bins Art Show

April 1st 5:30pm - 7:30pm at the Mill Valley Community Center

Celebrate talented student artists at the Artists’ Reception on Tuesday, April 1st, from 5:30-7:30 pm at the Mill Valley Community Center! Enjoy refreshments while viewing powerful environmental posters from local students, with selected artwork to be featured on Painted Bins throughout Mill Valley this summer (winners to be announced at the Re-loved and Re-sourced Market).

Free Climate Action Workshops

Are you ready to make a difference? Join Resilient Neighborhoods for an informative and inspiring 5-session workshop designed for Marin home renters and owners. You will learn: 

• Practical tips and strategies to reduce your carbon footprint
• The power of individual action and collective impact
• How to make informed consumer choices
• Simple steps to reduce energy consumption at home (for home renters and owners!)
• Sustainable transportation options and habits.
• Eco-friendly food choices and waste reduction techniques
• Steps to be prepared for climate-related emergencies

Let's work together to build more sustainable lifestyles and a greener future.

Spring online teams start on Wednesday, April 2, at 4:30 p.m.

Sign up today!

Shoreline Adaptation

Mill Valley is proactively planning for the growing risks of coastal flooding and rising groundwater with its first Sea Level Rise Shoreline Vulnerability Assessment and Adaptation Framework. Funded by a grant from the Ocean Protection Council, this effort will help the City understand local flood hazards and develop strategies to protect the shoreline.

The City is currently seeking proposals from expert consultants to assess vulnerabilities, propose adaptation solutions, and engage the community in shaping a resilient future. Learn more about this project and check out additional resources.

Stay informed! Sign up for email updates on Mill Valley’s sea level rise projects.

Transform Your Lawn into a Drought-Tolerant Garden with Cash-for-Grass Rebates!

Spring is the perfect time of year to plant trees as well as native, drought-tolerant and pollinator plants that use less water and support the ecosystem.

If you’re looking to save money on your water bill, consider replacing your lawn, which typically uses four times as much water as climate-appropriate shrubs and perennials.

For a limited time, Marin Water customers could qualify for a rebate of up to $4.68 per square foot for replacing lawns up to 1,000 square feet – that’s $4,680!

Learn more and apply

Marin Sustainability Tracker

Are you familiar with the Marin Sustainability Tracker? This tool from the Marin Climate and Energy Partnership (MCEP) is an interactive map that shows how each jurisdiction is doing in terms of sustainable development. It covers categories such as energy, transportation, greenhouse gas emissions, waste, and water.

Check out the tracker here

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Keep updated on local sustainability efforts and how you can get involved

Looking for More Ways to Get Engaged and Celebrate?

There are Earth Day events happening in Marin all month!



Check out the Marin Climate and Energy Partnership Event Calendar