A sheen often seen near the outfall in the far northwest pond portion of Prairie Lakes was cause for concern among local environmental activities. A consultant hired by the village and Izaak Walton Preserve determined the sheen is not toxic. (Chronicle file photo)
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Consultant reports water quality good at main Prairie Lakes; High iron content in northwest pond remains a problem

(Editor’s note: After local environmental activists questioned the original version of this story, we did a more thorough review of the report and presentation from the Fehr Graham study of the Prairie Lakes system and have revised the story to provide a more complete version of the study’s conclusions.)

The highly anticipated water quality study results for Prairie Lakes at the Izaak Walton Preserve showed that the water detention system is working properly but high…

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