Wastewater Treatment Plant

System Capacity
The wastewater system consists of a fully sewered Village with twelve (12) sewage lift stations, 53.6 miles of sanitary sewers and an ‘activated sludge’ wastewater treatment facility . Treated effluent is discharged to the Milwaukee River. The last plant upgrade occurred in 2005 and increased plant capacity from 1.6 mgd to 2.5 mgd. The plant is presently operating at about 1.50 mgd of influent which is 60% of its design hydraulic capacity. The current average organic loadings are at about +77% of the new design loadings capacity. The plant currently serves a population of 11,450. Available plant capacity has been deemed sufficient for system growth and expansion to the year 2024 serving a projected population of 17,217.
Influent wastewater undergoes mechanical screening and then grit removal in an aerated chamber at the facility’s ‘headworks’. Further treatment includes primary clarification, single-stage aeration for carbonaceous and nitrogenous BOD removal, final clarification, gaseous chlorine disinfection and post aeration prior to effluent discharge to the Milwaukee River. Effluent permit limitations are 30mg/l BOD, 30 mg/l suspended solids, 6.3 to 12.0 mg/l ammonia nitrogen (varies with season) and 1.0 mg/l phosphorus. The plant generally achieves 90 to 99% removal for each of these pollutant parameters.