The Medfield DPW was notified on October 4, 2018, by the laboratory that a sample collected on October 3, 2018, was positive for E.coli bacteria. These bacteria can make you sick, and are a particular concern for people with weakened immune systems. Bacterial contamination can occur due to a break or other disturbance in the distribution system (pipes) or a failure in the water treatment process. Required follow-up samples were collected on October 4, 2018, however, one sample was collected at an invalid location, which is a violation of the Revised Total Coliform Rule, and requires that we issue this notice. It should be noted that ALL valid follow-up samples collected on October 4, 2018, DID NOT show the presence of E. coli. The full drinking water notification is here: /DocumentCenter/View/2094/Drinking-Water-Notification-