The Town of Cary produces drinking water from Jordan Lake at a treatment plant that it owns with the Town of Apex. Treatment capacity increased to 40 million gallons per day with expansion that was completed in 2002. The plant has been in compliance with regulatory standards since opening in 1993.
The water plant is six miles from Jordan Lake, which is part of the Cape Fear River basin. The lake was created to supply water regionally, control flooding, improve flow downstream, and provide recreation.
Drinking Water Quality Report – This brochure is provided for water customers annually as required by the U.S. Environmental Protection Agency. It summarizes test results, health effects information, and other important information about Town water programs. The report lists Town contacts and sources of additional information.
Water Treatment Lab Summary – This comprehensive laboratory report has test results for all parameters for finished water from the Cary/Apex Water Treatment Facility and distribution system.
The Cary/Apex Water Treatment Plant uses a relatively new process with special concrete treatment basins called Super-Pulsator Flocculator Clarifiers for removing particles from the water. Each can treat up to 8 million gallons of water a day. These devices save money because they require less space than conventional sedimentation basins.
The basins use a vacuum chamber for pulsing action as water flows upward, becoming clearer as larger particles settle. Pulsing prevents particles from settling completely, and over time these particles form a blanket that helps filter water as it flows upward through the basins. The plant also has 10 multi-media filters that remove finer particles. Ozone is used to disinfect, remove organics, and control taste and odor. The treatment plant staff uses ammonia and chlorine for final disinfection, suspending the addition of ammonia each March.
Fluoride is added as the federally recommended level of 0.7 parts per million at the customer's tap.
The expansion included significantly increasing storage to 8 million gallons of water that can be held at the plant after treatment. The project also included replacement of chlorine gas with liquid sodium hypochlorite to increase worker and community safety by eliminating the potential of gaseous chemical releases at the facility. The expansion project and the incorporation of ozone enable the plant to meet federal requirements for improving the nation's drinking water.
Cary has received the Directors Award of recognition from the Partnership for Safe Drinking Water, an association of water utilities and government, for going far beyond federal requirements in an effort to achieve excellence in water quality.
1400 Wimberly Road
Apex, NC 27523
PO Box 8005
Cary, NC 27512-8005
For more information, contact:
Kelvin Creech, Water Systems Manager
Tours for middle and high school groups:
Srijana Guilford, Water Conservation Education Specialist
For general information and college tours:
Sophie Carr, Administrative Assistant
For water quality information:
Penny Rosser, PhD, WTP Chemist/Lab Supervisor