I am sitting in a coffee shop when a friend walks in and sits down to work in the chair next to me. I tell him that I’m writing an article about sewage pipes. He immediately chimes in and says, “Huh. My uncle is a wastewater engineer who inspects construction sites and he was telling me how often he finds sewage pipes that contractors have connected to a stormwater pipe instead of to the sanitary sewer system.” No, this is not the start of a bad joke…it’s just pure coincidence and a perfect way to introduce the lovely topic of [...]