 What's that? It's the main facility that cleans the water from our sewers before it gets let back into the bay. It's under those big windmills we can see from around Providence as we look down the bay. Okay, but why are you going there to figure out why the bay is cleaner? That's a great question. Jim McCauley, the deputy director of the Narragansett Bay Commission, which operates the Fields Point facility, says it all goes back to our sewer systems.