The goal of the City’s CSO Program is to reduce overflows from combined sewer outfalls and improve water quality in the Missouri River and Papillion Creek. The Long Term Control Plan (LTCP) lists the projects that will achieve this goal. Under an agreement with the State of Nebraska, Omaha is committed to implementing the LTCP by October 2037.
The requirement to address CSOs is based on the Clean Water Act, and more specifically the EPA CSO Control Policy of 1994. Requirements are implemented through the City's Consent Order and CSO Permits from the Nebraska Department of Environment and Energy (NDEE).
Beginning in 2006, the original LTCP was developed and submitted to NDEE in 2009. During that time, more than 140 community volunteers served on basin and community advisory panels to develop criteria to help determine the best, most cost-effective solutions.
The City evaluated various alternatives for areas of the City with CSOs and identified controls that would meet regulatory requirements, were cost effective and beneficial to the community. Implementation of the LTCP began in 2009 and continued until 2011 It when it was impacted by the Missouri River flooding. As a result of flooding, the City received an amendment to the Consent Order which extended the LTCP completion date from October 2024 to October 2027.
The 2021 LTCP Update provides a current estimated cost of the overall Program of $2 billion. This including contingencies and accounts for inflation through completion in 2037. Today, estimated Program costs are lower than what was originally projected.