What are TTHMs?
TTHM is an abbreviation for Total Trihalomethanes that form as a by-product during the water treatment process when chlorine reacts with naturally occurring organic matter. The longer the water remains in a pipe, the more of these by-products may be created. For more information please call 512-393-8010.

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1. What are TTHMs?
2. Why is chlorine used as a disinfectant?
3. How are TTHMs harmful?
4. What is the Maximum Contaminant Level for TTHMs?
5. Is the water safe to drink?
6. Was everyone affected?
7. What has the City done?