Aquarion is cleaning water mains in the Chimney Heights system over three weeks in Bethel.  Customers may notice discoloration from now through November 6th.  This is due to the temporary disturbance of the flow, which stirs up naturally occurring minerals that settle in the mains.  Aquarion says this is done periodically to improve water quality.  Customers should store water in their refrigerators for drinking and cooking, and refrain from washing laundry if water is discolored.