About

Jonathan Kalmuss-Katz is an attorney in New York, NY, with Earthjustice, where he contributes to the organization’s mission of protecting people’s health, preserving magnificent places and wildlife, and advancing clean energy. Practicing in the area of general practice, he brings a thoughtful, mission-driven approach to his work, with a focus on advocacy that supports clients and communities facing complex legal and environmental challenges. Based in New York City, Jonathan is part of a team dedicated to using the law as a tool for meaningful and lasting impact. As a New York attorney, Jonathan Kalmuss-Katz is committed to providing diligent, strategic, and principled legal service. His work reflects a strong dedication to careful legal analysis, clear communication, and effective problem-solving. Whether addressing emerging issues or navigating broader organizational concerns, he approaches each matter with professionalism and a client-centered mindset. Jonathan’s practice at Earthjustice underscores his commitment to advancing justice through skilled legal advocacy and a deep respect for the communities and causes he serves.

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