Public Water Supply District 2 out of St. Charles County has expressed interested in purchasing the Wright City sewer system.The city’s board of aldermen requested proposals for the purchase in January. Officials are weighing the benefits of divesting ownership of the city’s network of pipes, pumps and treatment plant. The move would be in response to costly upgrade mandates from the Missouri Department of Natural Resources (DNR).“We’d be giving you a very good, competitive rate,” said water district Vice President John Cook. He said being a public entity offered an advantage over any private companies.Ron Smith, the water district’s treasurer, said if purchased, the district would hold sewer service charges at their current rates for five years.Ward 1 Alderman Dan Rowden has said selling the sewer system could benefit the city and citizens financially. The city won’t be able to hold rates steady as the water district has offered to do, Rowden said.Upgrades mandated by the DNR are set to cost Wright City millions of dollars. According to the city’s request for purchase proposals, the city also has more than $2 million of current debt associated with the sewer system. That stems from a 2008 project to completely revamp the city’s sewer treatment plant.No decision has been made on whether the city will actually sell the sewer system. The city’s water supply system is managed separately and is not part of the consideration.The Wright City Board of Aldermen meets the second and fourth Thursday of each month, 6:30 p.m. at Wright City Hall.The Public Water Supply District 2 Board of Directors meets the second Tuesday of each month, 6 p.m. at the district’s offices, 100 Water Drive in O’Fallon.Sewer