21st Century Water is a conversation series about running water and wastewater utilities, told by the people who run them. After a fixed introduction, recent episodes begin with host Mahesh Lunani's all-hours greeting, 'good morning, good afternoon, good evening,' before he introduces a single guest and the system they lead. Lunani is the founder and CEO of Aquasite. His guests are the ones in charge. Jeffrey Szabo, CEO of the Suffolk County Water Authority, runs an authority serving over 1.2 million residents on Long Island and says he is proud to be an administrator rather than a technical person. His take on decision-making is candid: most calls land as doubles or triples rather than home runs, and being wrong is fine as long as the lesson is learned. The executive director of the Cape Fear Public Utility Authority in Wilmington, North Carolina, explains how a capital program that Lunani puts at $600 million across 100 projects gets ranked, using a risk-consequence matrix and a business case analysis for each project. The diagnosis is blunt. By the executive director's account, almost every utility in the nation is in an infrastructure deficit after 20 or 30 years of underinvestment. PFAS comes up in the same conversation. Business models get their turn too. The general manager and CEO of Del-Co Water, a fast-growing member-owned utility in the Columbus, Ohio region, explains charging system development and tap-in fees up front so existing members are not subsidizing new development, and makes the case for fewer, better-run utilities. Matt Stouder, executive officer of the Metropolitan Wastewater Management Commission, describes biosolids going to ryegrass farmers under a cooperative agreement and to a poplar farm whose harvest becomes lumber, paper products and chips for local businesses. Lunani's follow-up goes straight to the money. The wood does sell, Stouder answers, but it does not pay for itself yet. Staff culture is the other thread. Pieter Van Ry, director of what is introduced as Colorado's third-largest wastewater treatment facility, links employee engagement to an organization's economic output, citing research from his MBA and Gallup's work on engagement, and boils it down to happy people working harder. Heather Collins, president of the American Water Works Association, talks about public trust in water, the mentors who empowered her as a student, and the need for water to collaborate with other sectors, pointing to data center growth and scarcity; she wants to help others find water the way, in her words, water found her. Lunani stays collegial throughout, restating each guest's approach in his own terms and closing by saying how much he learned. More than one guest thanks him for the chance to tell their story. A good first listen is 'Turning Contamination into Innovation: The Cape Fear Story', for its hard numbers and its method for ranking projects.