List of Local Designers & Contractors

We have created a resource guide for Rainwater harvesting related Designers & Contractors in Marin County and nearby. See below, or to download the guide click on the file below. 

Note: This list has been developed for educational purposes only. SPAWN and MMWD do not recommend or endorse any particular company or product. Please use good judgment when selecting companies or consultants to work with. Listings are made alphabetically by service providers located in Marin, followed by additional service suppliers located outside of Marin.

This guide will be updated periodically. Please contact to recommend an addition. Thank you!

Consulting and Design

*ARCSA AP denotes individuals recognized as Accredited Professionals through the American Rainwater Catchment Systems Association (ARCSA). This is currently a leading standard for professional recognition in the rainwater harvesting industry. Please visit for more information.

Landscape Architects and Landscape Contractors

For a list of Qualified Water Efficient Landscapers, visit:
For a list of Bay Friendly Landscapers, visit: and click on "Choose a Bay Friendly Landscaper" under the Less Toxic Pest Management tab in the lower right corner.

Plumbing Contractors

For a list of Certified Testers of Backflow Prevention systems, visit:

Roofing Contractors

Gutters and Gutter Guards


The information contained in this resource guide is for general educational purposes only. The information is provided by SPAWN and MMWD and while we endeavor to keep the information up to date and correct, we make no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability or suitability of the information, products or services for any purpose. Any reliance you place on such information is therefore strictly at your own risk.

In no event will SPAWN or MMWD be liable for any loss or damage including without limitation, indirect or consequential loss or damage, or any loss or damage whatsoever arising from loss of data or profits arising out of, or in connection with, the use of this resource guide.