Hiawatha City Commission reviews sewer study
07/01/2021

(KNZA)--The results of an evaluation of Hiawatha's sanitary sewer system were reviewed with the City Commission Monday evening, and improvements recommended to address overflows of the system during heavy rains.

Mike Milius and Brooke Huddlemeyer with Olsson Associates met with the Commission to go over the study.

As part of the study, seven flow meters were installed around the city and two rain guages to monitor rainfall in May and June of this year. Closed circuit television inspections were performed and smoke testing conducted.

The tests did not find any major defects leading to the infiltration of water into the system.

Among the recommended improvements was the creation of storage basins at the north and south lift stations where excess flow could be diverted during times of peak flow, then reintegrated afterward.

Olsson is proposing that the improvements be done in three phases, with the initial phase at the north lift station at an estimated cost of around $3 million.

The Commission agreed to apply for Community Development Block grant funding to help with the project, with no obligation to accept the funds if approved.


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