Twelve Mile Creek Expansion
Expansion of the Water Reclamation Facility will increase wastewater treatment capacity
The Water Reclamation Facility (WRF) at Twelve Mile Creek is currently rated at a capacity of 7.5 million gallons per day (MGD). Expansion of the facility to 9 MGD will increase the treatment capacity of the plant to meet anticipated wastewater flows in the short term. Future expansion to 12 MGD will meet the projected longer-term wastewater treatment needs for Union County.
Our permit has been approved up to 12 MGD based on future upgrades. The observed average daily flow to the facility in 2021 has exceeded 6 MGD, which is more than 80% of the facility’s current rated capacity. In order to continue to meet the wastewater treatment needs of county residents and businesses, Union County Water is starting the process of expanding the facility to 9 MGD.
Facilities constructed or improved in the first phase of the Twelve Mile Creek WRF upgrade project
Project Details
The expansion to 9 MGD includes the following upgrades:
- New influent pump station
- Electrical improvements
- Additional standby generator power
- Diversion pump station control upgrades
- Additional blower equipment for aeration basins
- Sodium aluminate chemical feed equipment relocation
- New secondary clarifier(s) with RAS pump station
- Dewatered sludge cake storage facility with odor control upgrades
- Hydraulic improvements at the influent screening/influent pump station
- Hydraulic improvements for influent piping to secondary clarifiers
Improvements will be made at the Twelve Mile Creek Water Reclamation Facility
Schedule and Budget
The project schedule is as follows:
- Design/Permit/Bid: January 2022 - June 2023
- Construction: July 2023 - March 2025
The overall budget for the project is $26.3 million.
