CSO! Program: Schedule


Sewer separation

Design and construction of the CSO Solutions will take place in phases over the next 15 years. CSO Solutions have been divided into two groups: Major Projects and Sewer Separation Projects. Preliminary implementation schedules for both groups by phase are shown below. Implementation schedules were phased based on relative importance of adverse impacts on water quality and designated uses, the City of Omaha's financial capability and to reflect projects that could be accomplished concurrently. 

The overall final milestone of October, 2024 will likely remain unchanged. However, individual phase milestones may change depending on unforeseen circumstances and with the concurrence of the Nebraska Department of Environmental Quality.

Major Projects by Phase

Phase 1 2009-2015
  • South Omaha Industrial Area Sewer Separation (SOIASS)
  • South Omaha Industrial Area Lift Station
  • South Omaha Industrial Area Force Main
  • South Interceptor Force Main
  • Missouri River Wastewater Treatment Plant Improvements
  • Leavenworth Lift Station Replacement
Phase 2 2010-2018
  • Aksarben Village Neighborhood Sewer Separation
  • Saddle Creek Area - 55th St to 64th St Sewer Separation
  • Saddle Creek Retention Treatment Basin
Phase 3 2012-2019
  • Miller Park to Pershing Detention Basin Sewer Separation
  • Minne Lusa Stormwater Conveyance Sewer
  • John Creighton Blvd (JCB) Conveyance Sewer
  • Pershing and Storz Detention Basin Improvements
  • Paxton Blvd Stormwater Conveyance Sewer (30th St to 41st St)
  • Paxton Blvd Stormwater Conveyance Sewer (41st St to 49th St)
  • Minne Lusa Ave Storage Facility - Phase 1

Phase 4 2017-2024
  • Deep Tunnel and Drop Shafts
  • Deep Tunnel Lift Station & Force Main
  • Conveyance to Tunnel Drop Shafts
  • Missouri River Wastewater Treatment Plant Retention Treatment Basin
  • CSO 204 - 63rd St & Ames Storage Tank
  • Minne Lusa Ave Storage Facility - Phase 2
  • Jones St to Leavenworth Diversion Structure

Detailed Timeline

Sewer Separation Projects by Phase*

Phase 1 2009-2011
  • Webster St Sewer Separation Phase 2
  • 42nd St & X St Sewer Separation
  • 24th St & Ogden St Sewer Separation
Phase 2 2011-2015
  • Spring St Sewer Separation
  • 36th St Sewer Separation (State St to McKinley St)
  • Nicholas St Phase 1 (10th St to 16th St)
  • Martha St Sewer Separation Phase 1
  • Nicholas & Webster Sewer Separation Phase 1
  • CSO 211 Sewer Separation
  • 26th & Corby Sewer Separation Phase 1
Phase 3 2014-2018
  • Spring Lake Park Project
  • Nicholas & Webster Sewer Separation Phase 2
  • Nicholas St Sewer Separation Phase 2
  • Cole Creek CSO 204 Sewer Separation Phase 1
  • Missouri Ave Sewer Separation Phase 2
  • 26th & Corby Sewer Separation Phase 2
  • Gilmore Ave Sewer Separation Phase 1
  • Cole Creek CSO 204 Sewer Separation Phases 2 & 3
Phase 4 2016-2020
  • Martha St Sewer Separation Phase 2
  • Nicholas St Sewer Separation Phase 3
  • 26th & Corby Sewer Separation Phase 3
  • 33rd St & Taylor St Sewer Separation
  • Cole Creek CSO 204 Sewer Separation Phase 4
  • John Creighton Blvd (JCB) & Miami St Phase 1 Sewer Separation
  • Forest Lawn Sewer Separation
  • Cole Creek CSO 204 Sewer Separation Phase 3 Rehabilitation
  • Cole Creek CSO 202 Sewer Separation Phase 1
  • 18th St & Seward St Sewer Separation
  • Pierce St Sewer Separation
  • 41st St & Sprague St SE Phase 1 Sewer Separation
Phase 5A 2016-2022
  • 16th St & Grant St Sewer Separation
  • 26th & Corby Sewer Separation Phase 4
  • Missouri Ave Sewer Separation Phase 3
  • 20th St & U St Sewer Separation
  • Hickory St Sewer Separation
  • 41st St & Sprague St NW Sewer Separation Phase 1
  • John Creighton Blvd (JCB) & Miami St Sewer Separation Phase 2
  • Gilmore Ave Sewer Separation Phase 2
  • 26th & Corby Sewer Separation Phase 5
  • 41st St & Sprague St SE Sewer Separation Phase 2
  • 49th St & Fowler St Sewer Separation
  • 50th St & Sigwart St Sewer Separation
Phase 5B 2017-2021
  • Cole Creek CSO 203 Sewer Separation
  • Cole Creek CSO 204 Sewer Separation Phase 5
  • Cole Creek CSO 204 Sewer Separation Phase 6
  • 42nd St & Q St Sewer Separation
  • CSO 212 Sewer Separation
  • CSO 210 Interceptor Improvements
  • Cole Creek CSO 204 Sewer Separation Phase 7
  • Cole Creek CSO 202 Sewer Separation Phase 2
  • CSO 210 Sewer Separation
  • Cole Creek CSO 204 Sewer Separation Phase 8
  • CSO 211 Interceptor Improvements
Phase 6 2019-2023
  • 23rd St & Seward St Sewer Separation
  • 46th St & Grand St Sewer Separation
  • 30th St & Burdette St Sewer Separation
  • South Barrel Diversion
  • 41st St & Sprague St SE Sewer Separation Phase 3
  • John Creighton Blvd (JCB) & Miami St Sewer Separation Phase 3
  • 43rd St & Boyd St Sewer Separation
  • South Barrel Conversion
  • 41st St & Sprague St NW Sewer Separation Phase 2
  • Cole Creek CSO 202 Sewer Separation Phase 3
Phase 7 2023-2024
  • Cole Creek CSO 204 Sewer Separation Phase 9 Rehabilitation
  • 41st St & Sprague St NW Sewer Separation Phase 3
  • Cole Creek Diversions

Detailed Timeline

*Additional City sewer separation projects also underway.