Residents of one east-central Iowa city are no longer seeing red after a fix to their water system. Marengo City Financial Manager Barb Barricksays the problems with the water began a couple of months ago. She says they were getting a lot of iron in the water and that was causing problems including rust stains on residents’ laundry. She says an upgrade to the water system has helped clear up the problem.The public works director reported that the “filter media” at the water treatment plant is back on-line and the water quality in Marengo is “exactly where it should be.” Barrick says the water was still safe, but the city did offer free samples of a rust-remover product to users who had problems with the water before the system was fixed.