Hillsborough Disinfecting Water with Chlorine, Flushing Lines in March

The Town of Hillsborough will use chlorine instead of a combination of chlorine and ammonia to disinfect public drinking water for a month, beginning March 1. This annual disinfection is required by the state.
In addition, town employees will release water from fire hydrants and some valves in the town’s water system and perform basic maintenance to them. The flushing of water mains helps ensure chlorine flows through the entire system.
Flushing will start in the central part of town and then move north and south simultaneously. It is expected to be complete by the end of March, depending on weather.
More information
Documents for more information are attached below and available on the town’s Utilities webpages.
- The Annual Chlorine Disinfection document contains information for customers who use water for special purposes or who notice a chlorine taste and odor in March.
- The Water System Flushing document contains information on removal or relocation of plants and items around fire hydrants as well as possible air bubbles or discoloration of water from flushing.
For additional information on water system flushing, see a video on the town’s YouTube channel.
Customers also can contact the Water Treatment Plant at 919-296-9640 with any questions on the use of chlorine and the characteristics of the town’s water.