Oshkosh launches wastewater treatment enhancements amid rising chemical costs

In the heart of Oshkosh's city hall, council members gathered to discuss pressing issues that shape the community's future during the recent Common Council Budget Workshop. The meeting, held on March 25, 2025, focused on the city's wastewater and stormwater utilities, highlighting significant advancements and ongoing challenges.

The discussion began with an update on the wastewater treatment plant's efforts to manage sanitary waste effectively. Officials reported a remarkable reduction in clear water inflow, which has significantly improved the plant's capacity to handle wet weather flows. Over the past 15 years, the city has successfully decreased peak flow rates from over 20 million gallons per day to around 60, thanks to ongoing infrastructure improvements. However, the aging sewer system, with sections dating back to the 1800s, remains a concern, as approximately 20 to 30 miles of these old pipes are still in service.

A key point of discussion was the city's participation in a Wisconsin State Lab of Hygiene study on COVID-19 in wastewater, which underscores the importance of public health monitoring. Additionally, the council addressed the need for a new discharge permit, which has yet to be drafted by the Department of Natural Resources (DNR), leaving the city to operate under an expired permit until a new one is issued.

Budgetary implications were a central theme, particularly regarding phosphorus regulation. The city is preparing for the implementation of a new multi-discharge variance, which is expected to cost around $350,000 in 2025. This expense will be crucial for compliance with environmental regulations, as the city aims to enhance its phosphorus treatment processes.

The meeting also touched on the stormwater utility's role in managing flooding and runoff. Recent projects, including the construction of detention basins and improvements to the storm sewer system, are designed to alleviate flooding issues in vulnerable areas. However, compliance with the Upper Fox and Wolf River Basin's Total Maximum Daily Load (TMDL) for phosphorus and total suspended solids will require ongoing investment and effort over the next 50 years.

As the council moved through the agenda, they acknowledged the challenges faced by the engineering division, particularly in filling vacant positions. The difficulty in recruiting qualified engineers has been exacerbated by a competitive job market, leading to delays in project execution. The council emphasized the need for strategic outreach to local universities to attract new talent into the field.

In conclusion, the Oshkosh Common Council's budget workshop illuminated the city's commitment to enhancing public health and safety through effective waste management and infrastructure improvements. As the council navigates regulatory challenges and budgetary constraints, the discussions set the stage for future initiatives aimed at fostering a sustainable and resilient community.