Due to a recent spike in COVID-19 cases in Hawaii, Adopt-A-Highway clean up events will be suspended until further notice.

Logo of HDOT Highways Division - Maui District.

What We Do: Protect Maui's Stormwater

Ways to Make a Difference

We all need to do our part to Protect Our Water. Here are environmentally mindful practices to implement at home, at work, and in our community to malama our moana.


Learn how to adopt good habits in your everyday routine to help keep our streams, harbors, and the ocean clean.

Go to Individuals and Families page


Adopting good habits in your business can help keep our streams, harbors, and the ocean clean.

Go to Businesses page

Designers & Contractors

Construction projects generally require ground disturbing activities and the use of various types of materials. Mitigate your project’s risk to stormwater.

Go to Designers & Contractors page


All harbor users have a unique opportunity and responsibility to protect the ocean from pollution by incorporating Best Management Practices into their daily operations.

Go to Harbors page


Learn gardening best practices to keep pollution from our stormwater.

Get Involved & Get Educated

Adopt-A-Highway Program

Get involved by joining our public service program. Volunteer groups pick up litter along Hawaii’s state highways, helping to prevent trash from reaching our oceans.

Education Outreach Workshops & Presentations

We love to teach people and increase awareness about pollution and stormwater. Through this program, our engineers and scientists visit schools and organizations to hold educational workshops.