Michaela Chesin, Banner Staff PROVINCETOWN — As the country inches closer to the one-year mark of living with COVID-19, clues to when the threat will end sit in the town's waste streams. Provincetown is the only town on Cape Cod to track the levels of COVID-19 through sewage, although various pilot programs have been adapted in cities, towns and universities all around the country. Nantucket is also testing sewage for COVID-19. The wastewater tests help monitor when COVID-19 is stable within the community, or indicative of worsening conditions or an outbreak. “When you're trying to...