ATLANTA (May 18, 2016) - Siemens is providing critical power infrastructure technology to upgrade the Chicago Department of Water’s South Water Purification plant that will save the city up to $4 million a year in energy and maintenance costs. The technology, including medium-voltage switchgear and control, low-voltage switchgear and power transformers, will allow the plant to distribute power more efficiently to key process points throughout the plant to keep water flowing.