 Sampled since last January, the analysis included levels of dissolved oxygen, ammonia, lead, and other characteristics. Wendy Gillette, CBS News. Every week on What's Working in Washington, we give you a glimpse into what the power players are doing and thinking. I'm your host, Mark Walsh. If you're a DC insider and want to know what leaders in other industries are talking about, we give you that insight, too. Our conversations are frank, valuable, and usually even a little bit funny.