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Coulee Dam utility customer charges for sewage treatment will likely rise $5-$6 a month to around $61-$62 per household equivalent when the town builds its new wastewater treatment plant, Mayor Greg Wilder told the town council at its Aug. 9 meeting.

Construction is beginning on the $7.7 million project now with the contractor on site.

Wilder said if Elmer City decides to build its own plant in eight years, when a contract between the two towns ends, the ERU (Equivalent Resident Unit) rate Coulee Dam residents would pay would rise to about $74.20.

Wilder said Coulee Dam contributes 76 percent of the flow to the facility, and Elmer City 24 percent.