The water supply for MWSD customers is drawn from the East Fork Stones River and from Percy Priest Reservoir.
The plant operates 24 hours per day, every day of the year, and consistently produces finished water that meets or exceeds all state and federal criteria for drinking water quality.
The Stones River Water Treatment Plant has the capacity to treat 20 million gallons per day of drinking water. On an average day, over 10 million gallons of drinking water is softened, disinfected, filtered and fluoridated. The plant features state-of-the-art equipment such as 0.1 micron membrane filtration, granular activated carbon contactors and onsite hypochlorite generation for improved water quality.
The distribution system has the capacity for storage of twelve million gallons. This storage helps to maintain the pressure in the system, fire protection and is available even during power outages.
DrinkTap - information about water quality
The purpose of this water quality report is to provide you, our customer, with information regarding your drinking water. We want to keep you informed about the water and services we have delivered to you over the past year, and we are pleased to provide you with the 2012 Annual Water Quality Report. The most important part is to let you know that your water is safe for drinking. We also want to take this opportunity to give you a little more background on your water system.
A completely new wastewater treatment plant was placed in operation in 2000. This plant utilizes a biological process to convert pollutants to settable solids, which are then removed by settling, then dewatered and sent to the landfill. The water is then filtered, disinfected by ultraviolet light, and aerated before discharge to the West Fork Stones River. The resulting reclaimed water is of very high quality, on par with drinking water standards of the 1970's.
Reclaimed water is utilized on-site at the treatment plant for irrigation and for plant process water. A 24-inch reuse water line has been installed from the plant to Broad Street to make this resource available for other uses.
Personnel operating from this location deal with all aspects of the potable water distribution and sewage collection systems. This includes line construction and repair, making taps for both water and sewer services, and inspection and maintenance of nearly 700 miles of pipelines.
The most efficient and cost effective methods are utilized to maintain the system. Trenchless technology, including the use of underground television cameras to inspect pipe and locate breaks, and underground boring devices, is used on a daily basis to minimize disruptive and costly digging.
Although the normal working hours at this location are from 7 a.m. to 4 p.m., workers are on call at all times to respond to emergency needs.