KALAMAZOO, Mich. (Michigan News Source) – Kalamazoo city officials will conduct a dye test of Arcadia Creek on Monday and investigate potential traces of sewage.

In late September, officials issued a no-contact advisory for a portion of the river after  750 gallons of sewage overflowed from a private lot.

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The dye used for the test may cause Arcadia Creek to turn a yellow-green color. City officials said the dyes are safe and approved for this investigation.