Water Treatment Plant Improvements

The City of Mount Vernon was simultaneously facing water quality regulatory deadlines and the start-up of a new large industrial customer. The City’s Water Works Department needed to quickly make improvements to its drinking water treatment facilities to handle both of these challenges.
Under a guaranteed savings program run by Johnson Controls, the City selected the Lochmueller Group (Lochgroup) to engineer the expansion of their existing water treatment plant from 4 mgd to 6 mgd within a tight timeframe.

To protect the public from harmful microbial contaminants that can be found in the Ohio River, Mount Vernon’s source of drinking water, a state-of-the-art UV disinfection system is an integral part of the design.

In addition, a third treatment train is being incorporated to provide 50% more production capacity, in part to service the new industrial customer. The design complemented the existing facilities by adapting to the limited space. Design included the following key elements:

  • High-rate sedimentation to remove particulates found in the Ohio River supply
  • Gravity filtration to remove microbial contaminants
  •  Replacement of aged, worn pumps with more energy-efficient models
  • New disinfection practices (addition of UV and reduction of chlorination)
  • Additional finished water storage in the distribution system
  • Environmental stewardship through wise land use and stormwater management.

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