By: Matthew Coomer, Intern with the NOAA Marine Debris Program
You may not think about wastewater treatment plants (WWTPs) very often, but you use them every day. In fact, they are essential to protecting our health and the environment; WWTPs change our sewage into clean water that can safely re-enter rivers and the ocean. These facilities are complex, but to simplify, they filter solid material out of wastewater, allow microorganisms to feed on the organic matter that’s left behind, and then kill any dangerous bacteria. Whenever you use water at home or in your community, you use your local WWTP. Unfortunately, while these treatment plants are very good at their job, they may also be point sources of a persistent type of marine debris— microplastics.