Residual line main image

Construction updates

Louisville Water is starting a project to improve the reliability of our infrastructure.

Louisville Water’s filtration process produces residual solids that must be removed from the treatment plant. The residual line is the pipeline that takes the residuals from the Crescent Hill Water Treatment Plant to lagoons at our B. E. Payne Water Treatment Plant in Prospect. The system is critical to daily water production at Crescent Hill. The current line, built in 1971, is reaching the end of its useful life, so we are building two new lines for increased redundancy.

Starting March 10, the first phase of River Road will be closed to thru traffic from Zorn Avenue to Blankenbaker Lane. Access to homes and businesses will remain open. When construction is completed in each phase, the road will be paved and reopened as we move east. The project is expected to last two years.

Residual line detour map

Project Route and Commuter Detour

The project runs along Reservoir Avenue from our plant in Crescent Hill down Zorn Avenue and along River Road from Zorn Avenue to Transylvania Avenue and along Transylvania Avenue to our property at the B.E. Payne Water Treatment Plant. This will include the installation of two dual 24-inch residual lines. In order to maintain the safety of the public and our crews, it will be necessary to close River Road during construction of these mains. The construction along River Road will occur in four phases.

Residual Line detour map


What: Infrastructure reliability improvements – new residual line construction
When: March 2025 – Spring 2027
Where: Along Reservoir Avenue from our treatment plant in Crescent Hill down Zorn Avenue and along River Road from Zorn Avenue to Transylvania Avenue and along Transylvania Avenue to our B.E. Payne Water Treatment Plant in Prospect
Why: Improve overall system reliability


  • You will not lose water service during construction.
  • We will provide regular updates via our dedicated project webpage LouisvilleWater.com/ResidualLineProject and our social media channels.
  • If you have any questions, please contact Project Engineer Dakotah DeRoche at (502) 212-5337 or via email at dderoche@LouisvilleWater.com.