Addison, IL – On any given day at the Village of Addison’s South Wastewater Plant operators have no idea what’s coming down the in?u- ent pipe. With a combined storm and sanitary sewer system, the 20” (508mm) inlet pipe can go from a trickle to raging water full with just a few hours of rain. “We always get bigger than usual equipment installed here because we have to be ready for the bigger ?ows. (The plant) can go from 1.5 to 20 MGD (237 t

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