Your ottawa water treatment experts we are culligan of ottawa, your water technology experts proudly serving central illinois. Our dealership specializes in providing water softeners, reverse osmosis systems, water coolers, bottled water, water filtering and softener salt delivery service to area homes and businesses. We've seen about every water problem imaginable and we're solving these problems to deliver the refreshing, clean and pure water that's become our hallmark. Water treated with culligan softeners or filtration systems will make an impression on you and your household or workplace. Culligan of ottawa history culligan of ottawa was founded in 1939 and was one of the first 25 dealerships in the culligan system, out of almost 800 today. The dealership started as ottawa ice company, where donkeys were used to deliver ice to local residents. Later it was scherrer hardware, and then in 1939, culligan. The dealership has undergone many changes over the years, from small additions to a complete remodel in 2010. Despite the changes, our commitment to our customers have never wavered.