Wastewater Treatment Facility

Facility Improvements
Over the years, the City of Monroe has made improvements to its Wastewater Treatment Facility:
  • During 1984, the City of Monroe upgraded to an Advanced Secondary Treatment Facility at a cost of $12.1 million.
  • In 1991, a 1,500,000 gallon equalization facility was added at a cost of $2,000,000.
  • During 1999, a Phosphorus Removal System was added for a cost of $600,000. The facility has the capacity to treat 3.7 MGD of flow, 15,000 pounds of BOD (Bio-chemical Oxygen Demand), and 7,600 pounds of TSS (Total Suspended Solids).
  • Between 2013 and 2015, the Wastewater Treatment Facility went through a major upgrade. The upgrade was needed to rehabilitate the plant processes as the capacity and ability to treat the loadings surpassed the plant's design.

It discharges into Honey Creek, which is a very small stream and part of the Pecatonica River Basin. The Wisconsin Department of Natural Resources has set very stringent standards that the effluent must meet. Those standards are summer limits of:
  • 10 mg/l BOD
  • 10 mg/l TSS
  • 39 ug/l Chlorine
  • .88 mg/l Phosphorus
  • 400 Fecal Coliform

Monroe has a number of industries like milk, cheese, whey drying, brewery, and corn ethanol production which are all wet-type industries. A large percentage of Monroe's influent loading is generated by those industries.