Free Chlorine Burnout 2026 As part of its regular maintenance program, the St. Johns County Utility Department is conducting a free chlorine burnout of its water distribution system beginning Monday, June 1, 2026, and continuing for 21 days. Periodically, the use of free chlorine (which is stronger and faster acting than our regularly used combined chlorine) is necessary to ensure a thorough cleaning of the entire water system. During the burnout, customers may notice open fire hydrants in the area as we flush the system of any sediments and force the free chlorine through the lines. It is important to note that though there may be some odor or cloudiness in the water, it is harmless and safe to drink and use normally. We recommend letting your taps run until clear if you notice a change. Customers who use tap water for in-home kidney dialysis should consult their doctor to determine if any changes are necessary in their residual disinfectant neutralization process. Customers using tap water for aquariums should monitor both free and combined chlorine residuals. For questions or more information regarding this burnout process, contact the County’s Water Treatment Plant Supervisor, Dan Nowaczyk, at (904) 209-2787.