The Williamstown Wastewater Treatment plant built in 2011 is located at 300 Industrial Road , is owned by Mayor and Council of Williamstown, Kentucky and operated by the Williamstown Municipal Wastewater Department.

The City of Williamtown Wastewater Treatment Plant treats wastewater for residential, commercial and industrial.  The vast network of pipes and pumps stations located throughout Williamstown and Dry Ridge collects untreated sewage  and transports it for treatment to our wastewater treatment plant.

The treatment plant  currently treats on average 514 thousand gallons a day, but designed for a flow average of 1.5 million a day.