Annual Temporary Switch to Free Chlorine

Beginning June 17 through July 29, Greenville Utilities will temporarily change the disinfectant used in the water treatment process. GUC will be using chlorine rather than chloramines during this time period. We provide notice to customers in a variety of ways when this process occurs.

Why Would GUC Convert from Chloramines to Free Chlorine?
This brief, scheduled change in disinfectant is a standard water treatment practice to keep water mains clean and free of potentially harmful bacteria throughout the year.

State drinking water guidelines recommend that utilities using chloramines periodically switch to free chlorine for a period of time. The temporary use of chlorine will ensure that a high level of disinfection is maintained throughout the network of water mains and pipes that deliver your drinking water.

Free chlorine is a more aggressive disinfectant than chloramines, and this temporary change in the water treatment process denies bacteria the ability to form resistance to the usual disinfection treatment process.

Switching to free chlorine is a proactive step to ensure that we maintain optimal levels of disinfection in the water distribution system.

As always, the drinking water will be regularly monitored to ensure that the water delivered meets, or is better than, federal Safe Drinking Water Act standards.

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