Mackenzie Wieser

Mackenzie Wieser

Chief Executive Officer  (916) 364-2437


Mackenzie has a passionate vision and a personal mission to protect the environment through everyday activism and strategic leadership. Mackenzie is dedicated to activating people to care about the natural world through the creation of innovative partnerships so that children and teens will have access to nature, through hands-on, experiential science education. As a mom of three, she cares deeply about education and that ALL children are given an EQUAL opportunity to quality hands-on experiences, helping children form lasting connections with nature. She is committed to helping youth know their place in protecting the environment while ensuring the development of the next generation of nature lovers. Mackenzie will know she has been successful leading Splash when the region has ensured that every student in the Sacramento region has more than one outdoor environmental educational experience during elementary school.

Prior to joining Splash in October 2019, Mackenzie served as an appointee to Governor Jerry Brown, focused on climate policy.  She was a Commissioner on the Mayors’ Commission on Climate Change in Sacramento, where she shared the regional perspective of how systemic impacts on the environment affect not only one locale, but an entire region. She served as a City Planning Commissioner for the City of Elk Grove for four years, where she worked diligently on updating the City’s General Plan, Climate Action Plan, and countless development projects around the city. Mackenzie understands how planning and development can work together for the common benefit of humanity and our natural world.

In November of 2022, Mackenzie was awarded the Environmentalist of the Year award by the Environmental Council of Sacramento (ECOS). This award is given to recognize and honor local leaders who have had noteworthy success in achieving action on climate change, preserving habitat, promoting transit-oriented development, and advocating for clean air and against sprawl.