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Cary/Apex Water Treatment Facility, Which Provides Water to Morrisville, to Begin Annual Disinfection Process

Post Date:02/27/2019 1:17 PM

In accordance with state and federal recommendations, the Cary/Apex Water Treatment Facility will temporarily stop adding ammonia to its water treatment disinfection process beginning Friday, March 1, 2019. Customers who use water for kidney dialysis machines, fish aquariums or other chlorine sensitive uses should be aware that water may contain chlorine, ammonia, or a mixture of the two at the beginning and end of the process. This six-week-long, annual process is recommended for municipal water systems and is being conducted in conjunction with other municipalities in the area. As part of the process, the staff will also be flushing the more than 10,000 fire hydrants throughout the Town of Cary. The water treatment facility will resume adding ammonia to the water treatment process on Friday, April 19, 2019. The Cary/Apex Plant provides treated water to Cary, Apex, Morrisville, the Raleigh-Durham International Airport and the Wake County portion of Research Triangle Park.

To help keep drinking water safe, the Town of Cary uses chlorine and ammonia to reduce trihalomethanes, a byproduct formed when water is disinfected with chlorine alone. The State of North Carolina recommends all water systems with the chlorine/ammonia process to cleanse their systems annually by switching to free chlorine and flushing the systems.

“Completing the disinfection process is an integral part of maintaining our utility system and our award-winning water,” said Jamie Revels, Cary’s Utilities Director. “In some cases, water may be slightly discolored, and customers may notice an increase in chlorine odor during the switchover.” Revels pointed out that any minor changes are temporary and a normal part of the annual process, and customers with health concerns should contact their health practitioner. 

Customers are encouraged to check their water before washing white clothes. If the water appears discolored, try flushing house faucets for a few minutes. Customers who have questions or who have water that fails to clear should call the Town of Cary at (919) 469-4090. For more, search “Switchover” at

Public Works Can Help You with Your Spring Cleaning! Mark Your Calendars for White Goods Collection Day, Bulk Item Pickup Week, and Green Day

Bulk Item Pickup - March 11-15
During this week, residents receiving residential curbside solid waste services may leave a total of five acceptable bulk items curbside on their regular trash/recycling curbside pick-up day, with no extra charge. Please visit for an updated list of acceptable bulk items. No sign up is required. Questions? Call 919-463-7070.

White Goods Collection - March 28
Please sign up
for pickup of white goods (such as washer, dryer, refrigerator, freezer, oven, stove, microwave) no later than 5:00 pm on March 25, at, or by calling 919-463-7070. Pickup day is March 28, and sign is required by March 25.

Spring Green Day - April 6 *Textiles Added!
Bring your documents, electronics, used cooking oil and textiles (clothing, towels, sheets, bedding, shoes, blankets, backpacks, etc.) to Town Hall (100 Town Hall Drive) from 10 am - 2 pm for safe disposal. No sign up is required. Questions? Call 919-463-7070.
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