City to Begin Chlorine Conversion

TYLER – As a result of low disinfection (chloramine) residuals in a portion of Tyler’s water system, the city will convert chloramines back to free chlorine as a measure of improving and maintaining water quality standards in the potable water distribution system. Tyler currently uses chloramines (a combination of free chlorine and ammonia) to disinfect its drinking water supply prior to distributing it. This is a reliable disinfection process that has been recommended by the Texas Commission on Environmental Quality for systems predominately treating surface waters, such as those comprising the majority of Tyler’s water supply.

It is standard industry practice to periodically convert chloramines back to free chlorine as a way to improve and maintain water quality standards in potable water distribution systems. The Environmental Protection Agency and the Texas Commission on Environmental Quality support this process as a necessary and effective measure for maintaining water quality. Free chlorine is the disinfectant that the city used for many years prior to converting to chloramines.

Tyler started converting its disinfection process to free chlorine for a period of about 30 days starting on Sunday and ending on June 20. The City will continue to monitor residual levels for the area under the boil notice and will rescind the boil notice as soon as levels are deemed compliant.

Generally, there are no noticeable changes in water quality as a result of this temporary conversion. However, some may notice taste and odor changes and a slight discoloration to the water. The City will implement directional flushing, combined with routine water monitoring, as measures to remove iron particles from water lines and to maintain the highest water quality for customers during the conversion. However, some iron particles may still make it into customers’ service lines despite the City’s efforts. Customers who experience discoloration should temporarily flush faucets, tubs and toilets until their water has cleared. Clothing should not be washed during times of discoloration so as to reduce the possibility of staining. Prior to washing clothing, customers may want to run a little water in their bathtub to check for discoloration. Periodic pressure drops may also be experienced due to the city’s extensive flushing efforts. Noticeable water quality changes associated with conversions are normally short-lived and are not associated with public health risks. Customers can safely consume and use their drinking water as normal during the conversion period.

At the conclusion of the conversion period, on or around June 20, the city will convert its disinfection process back to chloramines. Should you have questions or concerns regarding this temporary disinfection conversion, please contact the Tyler Water Utilities Service Center at (903) 531-1285. You can also visit https://www.cityoftyler.org/Departments/TylerWaterUtilities/FAQs.aspx for general facts about this temporary disinfection conversion