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Sierra Weir

Community Organizer

Sierra Weir is a natural pigment artist who grew up on the Allegheny River, earned her B.A. in Biochemistry & Molecular Biology, and found her way to 3RWK after finding a passion for science communication and advocacy. She is an amateur entomologist and mycologist who works from environmental justice and community-centric frameworks with the goals of learning, sharing, and fostering interconnectedness between people, ecosystems, waterways, and the land itself. Sierra comes from a family of coal miners, industry laborers, canners and chemists, and feels lots of love for the ancient and alive Southwestern Pennsylvania. When she’s not working on community programs or alchemizing local pigments, she traipses around on roller-skates, dumpster dives, and sprints to the library before her holds expire.

Sierra Weir
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Founded in 2009, Three Rivers Waterkeeper serves as both a scientific and legal advocate for our waterways, holding polluters accountable and empowering communities to protect their right to clean water. Our work is grounded in research, policy enforcement, environmental justice, and education.​

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Address:

800 Vinial Street, Suite B314
​Pittsburgh, PA 15212

 

Phone:

​(412) 589-9411

 

Email:

ops@threeriverswaterkeeper.org

© 2026 Three Rivers Waterkeeper. All Rights Reserved.

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