Annual Water Treatment Process Change

The City of Sanford normally uses a combination of ammonia and chlorine to disinfect its drinking water. However, the N.C. Division of Water Resources requires us to stop using ammonia for 30 days once per year to help maintain our high quality of water. 

Date of Change

Each year, the City stops adding ammonia to the municipal water supply on March 1 and resumes adding ammonia to the disinfection process on April 1. Additionally, we will flush the water mains throughout our system during this time to remove sediment in the water lines and refresh the entire distribution system. 

What to Expect

During the changes in our disinfection process and flushing of the system, you may notice a chlorine odor and/or discoloration to your water. Your water, however, will still be safe for drinking, bathing, and other daily uses.

While there are no associated health risks with the odor or discoloration, you may want to limit certain activities (such as washing clothes) during this time.

If you notice discoloration at the tap, allowing the water to run for 5 to 10 minutes should clear up the problem. Also, if you have aquatic pets, you may want to consult your local pet store to ask how this may affect your pet’s habitat.


Contact the Water Filtration Facility at 919-777-1803. The facility is staffed around the clock.