Chloramines: What’s new?

For years, the City of Deltona has been using chlorine to disinfect drinking water. Disinfection kills microbes that can make you sick. In order to meet new federal and state regulations governing water quality under the National Safe Drinking Water Act, the City is changing the way water is disinfected. The City will continue to use chlorine to disinfect water but will also add ammonia to the water to form chloramines as the chlorine residual. This process is called chloramination. Chloramination is basically adding a small amount of ammonia (less than one part per million) to water in the treatment process along with chlorine, thereby forming chloramines, or combined chlorine. In Florida, chloramines are used by at least 30 water utilities including the cities of Tampa, Ft. Myers and the Miami-Dade area. Major U.S. cities such as Denver and Minneapolis have been using chloramines since the 1940s.

Chloramines disinfect water but do not react as readily as chlorine does with naturally occurring organic matter in water sources to form "disinfection byproducts." Chloramines last longer and form less disinfection byproducts. Chloraminated water is safe for drinking, cooking, and other everyday use. Most people in our community will not need to change anything they do now. If you use dialysis or have an aquarium, you should read the additional information below.

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1. Chloramines: What’s new?
2. What you need to know if you use dialysis?
3. Why do kidney dialysis patients have to take special precautions?
4. What you need to know if you have an aquarium?
5. How do chloramines affect fish?
6. Is chloramine disinfection new?
7. Are chloramines safe?
8. What will my water smell or taste like with chloramines?
9. Will there be any noticeable difference in my water?
10. Can children and pregnant women drink chloraminated water?
11. Is it safe to wash an open wound with chloraminated water?
12. Will chloramines affect swimming pools?