Water disinfectant conversion to be complete by Thursday


Tyler’s tap water will soon taste and smell less like chlorine.

For the past 30 days, Tyler Water Utilities has switched from its usual disinfectant to using straight free-chlorine.

That 30-day conversion will end at midnight on Wednesday, according to a news release from the city.

The conversion was initiated after a portion of the city’s water fell below the state-mandated minimum chlorine residual in the pipes.

The city generally uses a mixture of chlorine and ammonia, called chloramines, to disinfect its water. The chlorine maintains the disinfection of the water in the distribution system, and the ammonia bonds with the chlorine to make it last longer in the pipes and more likely to maintain the mandated chlorine residual in the far reaches of the system.

But, there are non-pathogenic organisms that affect the ammonia and overtime can weaken its ability to bond with chlorine in the system.

Switching disinfectants clears out the pipes of various things that affect the ammonia, and more or less creates a clean slate for disinfection.

The switch from free chlorine to chloramines isn’t immediate, so it may take a few days for residents to notice a change.

Customers may contact Tyler Water Utilities at  to report any changes to smell or taste. 

Twitter: @TMTFaith

Digital Content Manager

Faith Harper is an East Texas native working for her hometown newspaper. She specializes in digital content for the Tyler Morning Telegraph. In her spare time, she loves tacos, road trips and is currently learning to sail.

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