Over the course of many years the City of Celina, Ohio has been challenged with supplying drinking water to the 11,647 residents of the city and the East Jefferson District. The difficulty arises from the source water, Grand Lake, a 21 square mile water body that contains high amounts of total organic carbon (TOC) and supports a high concentration of Planktothrix algae. The high TOC and algal content of the lake water has caused severe taste an

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