North Liberty’s waste water treatment plant underwent a major renovation and upgrade in 2008 to meet the growing population of North Liberty. A state-of-the-art bio-membrane reactor plant, which uses filters to remove particles larger than .004 µ (there are 25,400 microns in an inch). The plant’s upgrade from a conventional treatment facility vastly improved the output, and has benefited the local ecosystem, with fish and other wildlife able to return to Muddy Creek immediate adjacent to the plant.
The $8.4 million plant was the first membrane bio-reactor plant in Iowa and has been awarded the Governor’s Environmental Excellence Award, Special Recognition for Water Quality in July 2009, a prestigious award recognizing leadership and innovation in the protection of Iowa’s natural resources. The project was also recognized with a 1st Place Overall from the American Council of Engineering Companies of Iowa Grand Conceptor Award and in the Water and Waste Water category in 2010, and a National Finalist Award from 2010 National Finalist Award from the American Council of Engineering Companies in Washington, D.C. In July 2010, the plant recognized as a top performer, and featured in the industry publication Treatment Operator Magazine for its cleanliness.
A second phase was completed in 2018 to meet North Liberty’s continued growth.