CHESTERVILLE — In an annual rite of autumn, the Ontario Clean Water Agency flushed the hydrants in Chesterville today to prevent the buildup of rust. OCWA employee Bill Michaels is shown here letting one loose at the end of Mill Street, which happens to connect into the municipal waterworks through a water main that runs under the nearby river. According to Michaels, it’s one of three mains crossing the South Nation — two buried within the channel and a third attached to the side of the Main Street bridge. North Dundas Council has been advised to consider replacing the one on the bridge after that particular pipe broke this summer: The matter briefly came up at council’s meeting last night, Oct. 11. OCWA is contracted by the Township of North Dundas to run the municipal water and sewer systems in Chesterville and Winchester.