Water Treatment Plant
The Harrodsburg Water Treatment Plant was constructed in 1956 at its present location on Shakertown Road, in eastern Mercer County. The original plant was located on Mackville Road near the Salt River around the turn of the century, before outpacing the water supply. The source of water for Harrodsburg is above Lock 7 of the Kentucky River and below the confluence of Dix River. The plant was upgraded in 1980 to produce 4.0 MGD (Million Gallons per Day); including a new River Intake Pumping Station, a new raw water main, and a new finished water main into the distribution system. The plant was designed as a “high rate conventional treatment” facility.
Recent Expansions & Upgrades
With continued growth in Mercer County and Harrodsburg, the plant was once again expanded in 2012 to its current treatment capacity of 6.0 MGD. The project consisted of a new filtration building, two additional filters, a chemical storage building, coagulation and sedimentation basins, one high service / backwash pump station atop a 600,000-gallon clear-well. Recent upgrades have been to improve the computer-controlled instrumentation system, or SCADA (Supervisory Control and Data Acquisition) in 2016 with the implementation of CMMS (Computerized Maintenance Management Software) in 2019. The system allows operators to monitor and control a multitude of treatment parameters via PC or smartphone, and better facilitate preventative maintenance of the systems.
Facility and Operations
Harrodsburg’s water treatment plant consists of a conventional turbidity removal facility that utilizes chemical coagulation and mechanical flocculation, settling and filtration to remove suspended particles from raw water.
Harrodsburg Water Treatment Plant currently provides water to the City of Harrodsburg, the City of Burgin, Lake Village Water District and North Mercer Water District for a total of nearly 26,000 residents. Our distribution system consists of over 100 miles of water lines, one 750,000 gallon and two 1,000,000 gallon water storage tanks, with over 4200 water meters and 450 fire hydrants.
Raw Water Intake
Untreated water is gravity fed from the intake from Kentucky River, which is then pumped into the River Station via submersible pumps. Water is then pumped nearly 250 vertical feet to the plant for treatment by vertical turbine pumps at a rate of 4100 gallons per minute (GPM).
Chemical Mix Basin
The raw water enters a high energy flash mixing basin where it is treated with several chemicals for a variety of purposes. The primary coagulant, added to aid in the removal of fine suspended solids, is a poly-aluminum chloride. The coagulant increases particle size and weight and improves gravity settling prior to filtration.
Powder Activated Carbon is fed seasonally to aid in the removal of organics and algae, reducing taste and/or odor, disinfection by-products (DBP’s), and Total Organic Carbons (TOC’s) precursors.
The treated water then flows in a serpentine pattern through the sedimentation basin allowing for particles to gravity settle out of the water. Chlorine gas is used for disinfection before and after filtration, as it contains one of the best residual safeguards in the distribution system.
Filtration and Finished Water Storage
Once treated water leaves the sedimentation basin, it enters the filtration building and receives a dose of filter aid; a cationic polymer that aids in the filtration of particles and adhesion to the filter media. As the water flows down through the media the remaining solids becomes entrapped between media particles; the final stage in solids removal. Water gravity flows into six “mixed media” filters containing anthracite, sand, and gravel and is travels into two 600,000-gallon underground storage reservoirs called “clear-wells” for a combined total storage of 1.2 million gallons (MG). At routine intervals the filters will be cleaned of captured solids by reversing the flow of finished water at high velocities, known as “filter back-washing”.
Before entering the clear-well the filtered water is treated with Hydrofluosilicic acid (HFS) for fluoridation purposes and with Sodium Hydroxide; for the adjustment of pH in the finished water. The finished (potable water) is then ready to be pumped to Harrodsburg’s water storage tanks and to consecutive water system’s distribution systems, for use by the customer at the tap.
Water Quality Monitoring
Continuous laboratory analysis is performed at the Harrodsburg Water Treatment Plant and in the distribution system to ensure that all water treated at our facility meets or exceeds state and federal water quality compliance standards. Water is tested daily for turbidity, alkalinity, hardness, fluoride, pH, chlorine disinfectant residual among a multitude of other periodic water quality parameters.
Annual Water Quality Report
This report contains important information about your drinking water. Please go to the link below to view the report. To request a paper copy visit City Hall Water Department or call (859) 734-4971.
2018 Annual Water Quality Report
2017 Annual Water Quality Report
Boil Water Advisories
**None to Report. **
**Please note that the physical address of the Water Treatment Plant has changed from 3025 to 4023 Shakertown Road. Mercer County and Bluegrass ADD have analyzed the need to improve public safety and have therefore initiated the change. The change will take place effective immediately.
Harrodsburg Water Treatment Plant
4023 Shakertown Rd (US HWY 33)
Harrodsburg, KY 40330
Water Plant Superintendent
Class IVA Operator
(859)-748-5198 x301 (Office)
Water Plant Asst. Superintendent
Class IVA Operator
Water Treatment Plant Staff
Class IVA Operators
Class IIIA Operators