Village may hire firm to oversee treatment plant work

Ozaukee Press Staff

An engineering group will likely be hired to handle the bid and construction phases of a wastewater treatment facility upgrade project.

The large-scale wastewater treatment facility upgrade will help bring the village in line with Wisconsin Department of Natural Resources requirements that restrict the amount of phosphorus present in water that is discharged after treatment.

According to the DNR, small phosphorus increases in water can cause substantial increases in aquatic and algae growth, which can reduce recreational use, property values and public health.

Phosphorus is often found in fertilizers and causes algae to grow at rapid rates, decreasing oxygen levels and potentially harming aquatic life. In high concentrations, phosphorus can also lead to toxic algae blooms.

On Dec. 1, 2010 the DNR adopted revisions to the Wisconsin Phosphorus Water Quality Standards, which limited the amount of phosphorus wastewater treatment facilities can discharge to groundwater. No more than one milligram of phosphorus for every liter of water can be discharged.

The Village of Grafton has been partnered with Symbiot Science, Engineering and Construction Inc. since 2011 to develop improvements to the wastewater treatment site.

One way to reduce phosphorus is the installation of an additional coagulant point within the treatment process, according to village documents. At the coagulant point chemicals would be used to separate phosphorus, which turns into a solid, from wastewater.

Symbiot has completed a detailed design of the project and bidding is scheduled to begin on Friday.

Costs for the new system were estimated at $300,000.

Due to the large scope of the project, village utility staff members recommended seeking outside engineering project management services to manage the bid, award and construction phases of the project.

Brecken Gries, assistant utility director and engineer for the village, recommended Symbiont be selected to manage the project for no more than $32,790 because it designed the coagulant tank project and is familiar with phosphorus reduction methods.

The Board of Public works approved a recommendation that Symbiot provide professional engineering service for the bid and construction of the project. The Village Board will consider the recommendation on Monday.



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Ozaukee Press

Wisconsin’s largest paid circulation community weekly newspaper. Serving Port Washington, Saukville, Grafton, Fredonia, Belgium, as well as Ozaukee County government. Locally owned and printed in Port Washington, Wisconsin.

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Port Washington, WI 53074
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