Put treatment plant closer to the river
In checking the WWTA website, I see the planned discharge of treated wastewater is to pipe it seven miles to the Tennessee River/Chickamauga Lake. Why not build the treatment plant nearer the river/lake? There are several advantages.
One, additional development would be able to tap into the line instead of pumping untreated wastewater from new development to the proposed location, treating it, and then returning it seven miles to discharge.
Two, the pipeline could be larger than current design, with the extra volume used as stormwater storage if needed. If the excess capacity of a larger pipe were not used for stormwater storage, but rather future development, a significant multiplier in future development could be accommodated. When that development comes, the treatment plant might have to have additional capacity added, but all the pipelines would not have to be rebuilt or duplicated.
Third, the treatment facility would not be in the middle of a residential neighborhood.