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Sewer flows down 15% since 2016–2020 after lining projects, public works says
Summary
Public Works Director Arnold reported the sewer system has 66 miles of mains, 12 lift stations and a 15% flow decrease since 2016–2020 attributed to lining projects; upcoming work includes lift station conversions and tablet-based work tracking.
Public Works Director Arnold briefed the council on the North Mankato sewer system, saying the city operates 66 miles of sewer mains, 12 sanitary sewer lift stations and about 4.5 miles of sewer force main. He reported that the city employs one full-time sewer employee who is shared with the Street Department.
Arnold attributed a 15% decrease in sewer flow since the 2016–2020 period to lining projects on Marvin Boulevard and Carol Court that reduced infiltration. He said in 2025 the department will start using tablets for assigning and tracking work, complete the Northridge Lift Station conversion and begin design for the Marie Lift Station conversion. Arnold noted a challenge: increased treatment costs charged by Mankato will affect future budgets and rates.
The presentation was informational; the transcript records the project descriptions and capacity concerns but does not record a council decision tied to the sewer report.
