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Wisconsin DNR
License #:267003330
License #: 506032; Lab # 105-526

Waste Water Utility


The treatment plant staff operate a certified testing laboratory.  The DNR certification allows the lab to test and report, total suspended solids, BOD5, Phosphorus, Ammonia, Chloride and E-coli.  The staff also uses a microscope to determine process bacteria and activity, aiding in process control and treatment.



For information on maintaining your sanitary sewer service lateral, view this brochure and follow these do's & don'ts:

  • Place paper towels, feminine products, disposable diapers, dental floss, plastics, and other personal hygiene products in a wastebasket. Dispose as garbage.
  • Use sink and shower drain strainers. 
  • Collect grease and fats in a heat-resistant container, cool, and dispose of it in your garbage with solid waste.
  • Choose the most appropriate method of disposal for food scraps: composting; in the garbage for solid waste disposal; or down the sink by grinding with a garbage disposal unit.
    • Don’t use the toilet as a wastebasket for garbage, medications, or chemicals!
    • Don’t plant trees or large shrubs near sewer lines where roots can penetrate and create a dense mat of “root balls.”
    • Don’t pour grease, fats, or oils from cooking down the drain. Grease in drains collects and hardens into a plug.
    • Don’t connect French drains, roof gutters, sump pumps and other flood control systems to your sanitary sewer. These types of connections are illegal.


The waste water treatment plant cleans approximately 400,000 gallons of sewage daily.  The collection system has 5 sewage pumping stations, referred to as lift stations in the sewer piping collection system that send wastewater to the treatment plant.  The Kewaskum waste water treatment plant is an activated sludge plant, with aerobic digestion of bio solids.  The treatment plant has the ability to store bio solids for a minimum of 180 days. ( winter season)  Bio solids are injected beneath the soil surface in agricultural fields for the nutrient and soil conditioners that are contained in the bio solids.  At this time the sewer utility is not charging farmers for this fertilizer nutrient and soil conditioner.