Miami Waterkeeper’s (MWK) mission is to defend, protect, and preserve South Florida’s watershed through citizen engagement and community action rooted in sound science and research. We work to ensure swimmable, drinkable, fishable water for all. Through our efforts, we support a vibrant and resilient South Florida coastal community and environment for future generations. Our scope of work is diverse, with core issues including clean water, ecosystem protection, and resiliency. Serving our population of more than 4.5 million people across Miami-Dade and Broward counties, Miami Waterkeeper’s approach combines education and outreach, scientific research, advocacy, and when necessary, legal action. This report summarizes Miami Waterkeeper's successes and challenges in 2017, as well as our current mission and organizational structure.