Water
The City Water Plant is located at 4160 SR 502.
Waste Plant
4160 State Route 502
Greenville, Ohio 45331
Contact our office
Phone: (937) 548-2415
Fax: (937) 548-2296
Personnel
The current water treatment facility in Greenville was constructed in 1980. It is a lime softening plant with a design average capacity of four million gallons per day and a maximum design flow of six million gallons per day. The Water Plant is currently producing an average of 2.1 million gallons per day.
Water Sources:
Greenville has two sources of high quality water. The primary source of water is the Greenville Creek which is a scenic river and accounts for approximately seventy percent of the raw water that is treated. There are also nine wells that are available during periods when there is high turbidity levels in the stream (after heavy rains or snow thaws). The plant is designed to use either source individually or a combination of both. The City is taking steps to assure that these water sources remain uncontaminated by initiating a source water protection plan.
Treatment:
The Greenville Creek intake has a traveling water screen with an automatic spray wash. There are four pumps located at this intake. Three of the pumps are rated at 3 million gallons per day and the fourth pump is rated at 1.5 million gallons per day. The raw water is pumped to the rapid mix chamber where the lime slurry, sodium hydroxide, and aluminum sulfate are applied and completely mixed with the water. The water then flows to two solids contact units. These tanks serve as both flocculation zones and clarifiers. The chemicals react with hardness causing substances in the water. These particles then settle out of the water to form lime sludge.
After clarification, the water flows to a recarbonation basin. This water is stabilized (pH adjustment) by the addition of carbon dioxide. The carbon dioxide is produced with an underwater burner unit. Natural gas is mixed with air and blown to the burner unit and the amount of carbon dioxide needed is adjusted by the amount of gas burned.
The water then flows to four rapid rate mixed media filters. These filters remove any remaining fine particles. Loss of head and turbidity levels are constantly monitored. After eighty hours the filter is taken out of service and backwashed. The backwash water is sent to a 270,000 gallon surge tank and then is gradually recycled back through the plant.
After filtration, the water is chlorinated and flows to a one million gallon underground tank called a clearwell. The water is stored here until it is pumped to the distribution system.
Distribution:
The treated water is then pumped from the clearwell into the distribution system using one of four high service pumps. The distribution system consists of two elevated towers with a combined capacity of 1,500,000 gallons and a grid of underground pipes ranging in size from two to sixteen inches. There is approximately 85 miles of pipe, over 1,200 valves and 700 fire hydrants that are maintained by the Water Department.
Staff:
The water treatment plant is staffed 24 hours per day. The water department employs 4 Water Treatment Operators, 3 Maintenance/Relief Operators, 1 Laboratory Technician, 2 Distribution Maintenance Operators, and 1 Superintendent. Of these personnel, there are five Class III operators, one Class II operator, and two Class I operators.