Current Facility

The City of Roswell's Water Treatment Plant was commissioned in 1935 at a rated capacity of 300,000 gallons per day. In 1970, the plant was upgraded to produce a rate of 600,000 gallons per day. In 1990, the water plant was upgraded to its present rated capacity of 1.2 million gallons per day.


New Plant Opening Spring 2016

The City of Roswell is replacing its 80-year-old water treatment place with a new state-of-the-art plant. Since 1935 the City of Roswell’s Water Treatment Plant has delivered not only a consistent supply of water, but also the assurance of public health for generations of families served by the system. However, after nearly 80 years of service, Roswell’s old water plant could no longer efficiently and cost-effectively produce water for the City’s customers because older technology is very labor intensive for both operations and repair. Equipment frequently broke down and was costly to repair since some parts were no longer available.

Roswell Mayor and Council approved a contract with Layne Heavy Civil, Inc. for construction of the new water plant on February 24, 2014. Roswell began construction on the new water plant in April 2014 and anticipates that it will be operational by spring of 2016.

The new plant will reduce the City’s water production costs and is forecast to save the City $11.6 million over a 20-year period. The savings come from reduced water purchases from Fulton County and reduced costs to repair and refurbish the old equipment in the 80-year-old plant.

Photo Gallery of New Water Plant Construction


The City will see many benefits once the new plant is operational. Some of them include:

  • Maintaining local control over a key portion of the City’s water resources 
  • Securing the City’s future water supply by ensuring treatment capacity as the community grows. 
  • Providing a modern, reliable facility that mirrors the quality Roswell citizens expect in their City services. 
  • Reducing the risk of future rate increases for customers by slowing operational expenditures. 
  • Eliminating the need to pay Fulton County approximately $500,000 annually to purchase water. 
  • Reducing repair and maintenance costs for the 80-year-old facility. 
  • Serving as a regional leader in responding to the governor’s call to develop additional water resources to support the metro Atlanta region’s water supply plan. 

New Plant Cost

The new plant will cost approximately $15 million to build. The City has obtained a 20-year GEFA loan to pay for the new facility. Because of the City’s outstanding financial situation, its AAA bond rating, and its designation as a WaterFirst Community, the loan was secured at an interest rate of 1.4%.

Rate Impacts

Financial analysis shows water rates for Roswell water customers would only need to increase about $1 per month to assist in covering the remaining costs of a new water plant. This is possible because of the City’s exemplary bond rating, savings in water purchases from Fulton County, and savings in repair and maintenance costs.



  • How many customers are serviced by the Roswell Water Utility?
  • What are the benefits to building a new plant?
  • How will Roswell pay for the new water plant?
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