In January, the City of Stockton Municipal Utilities Department will be changing the drinking water disinfection process for its north Stockton service area. During this process, drinking water is treated using a chemical process to kill microorganisms like bacteria, viruses, and protozoa that can cause sickness and disease. The City currently uses chlorine to disinfect drinking water and will be converting to chloramines in its service area north of the Calaveras River for City water utility customers and County areas served by the City.