Water Quality

The Town of Cary is committed to delivering high quality and safe drinking water to citizens throughout our entire utility service area.  As part of our commitment to provide exceptional water service, we’ve invested in advanced water treatment systems and processes that provide a multiple barrier approach for water treatment optimization. The Cary/Apex Water Treatment Facility (CAWTF) is completing construction of a major expansion in early 2018 that will provide the needed capacity to serve the needs of our community for the next decade. The multiple barrier treatment process in operation at CAWTF provides water treatment using the following unit processes and procedures.  In our effort to deliver high quality and safe drinking water, we continue to evaluate best management practices to further enhance our treatment process and stay current with the evolving science of water quality management.


Water purification process chart


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Water Leaks

To catch leaks, the Town routinely surveys the water distribution system with electronic listening devices. The Town schedules system repairs as leaks are discovered. If you discover a leak in the system call 311 or (919) 469-4000 outside Cary.


If you experience a water leak on your property, use the main water shut off valve to stop the flow of water. If you cannot locate or shut off the valve, call 311 or (919) 469-4000 outside Cary to have the water shut off at the meter. Property owners are responsible for repairs both inside the home and from the dwelling to the water meter. The Town is responsible for repairing leaks in the street or between the street and the meter.

Water Meters

Cary installs and maintains all water meters and related appurtenances for residential and commercial utility customers. Call 311 or (919) 469-4000 outside the town for any of these water-related services:

  • purchase a meter
  • install a new meter
  • raise, lower, repair meter box or, replace box lid
  • replace a water meter with broken glass, is hard to read, or has aged out.

Water System and Fire Hydrant Maintenance

The Town performs annual operational tests and system maintenance on all Town of Cary fire hydrants. The tests serve a dual purpose by assuring adequate fire flow and the flushing of sedimentation from the distribution system.