Sanitary Sewer Division

The sewer division maintains 457,466 feet of sewer mains and 1,885 manholes.  The city of Onalaska does not have a wastewater treatment plant. All of Onalaska's wastewater is sent to the city of La Crosse for treatment. The Onalaska Public Works department takes care of all the cleaning of lift stations, sewer mains and manholes in Onalaska. The Public Works department also monitors all nine lift stations daily to make sure the pumps are working properly.