On February 22, 2021, the City of Maryville and Public Water Supply District No. 1 of Nodaway County approved a Joint Funding Agreement to construct Granular Activated Carbon (GAC) adsorbers at the Maryville Water Treatment Plant. GAC is considered the best available technology (BAT) for organics removal and can significantly reduce MIB and Geosmin. Over the past several years, taste and odor (T&O) issues in the water treatment process have increased in frequency as a result of Geosmin levels in the raw water supply at Mozingo Lake.
The GAC Adsorber Project will convert an existing 250,000 mg clearwell tank to a post-filter contactor and include various yard piping modifications. A Construction Manager At-Risk (CMAR) process will be used to expedite design and construction with the intention of completing prior to lake turnover occurring each fall.
The agreement with Public Water Supply District No. 1 serves as a joint commitment to addressing ongoing water taste and odor issues for customers. The City of Maryville appreciates the District’s assistance through funding, allowing the project to proceed without debt financing and associated rate increases. The District and City will continue to analyze long-term partnerships for water treatment, including, but not limited to the construction of a new water treatment plant.
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