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the claim

Chlorine is used to disinfect drinking water.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
10 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that chlorine is used to disinfect drinking water?

Yes. The CDC states that water utilities usually use chlorine to disinfect tap water, and a reference book states chlorine has been the almost universal chemical used worldwide to disinfect drinking water for a century. Several other sources describe chlorine or chlorination as a widespread method for drinking water disinfection.

Verdict: SUPPORTED · 10 sources for, 0 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence for · 10
Chlorine
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Chlorine. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Chlorine

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More for · 9
Chlorine dioxide
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Chlorine dioxide. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Chlorine_dioxide

About Water Disinfection with Chlorine and Chloramine | Drinking Water | CDC
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About Water Disinfection with Chlorine and Chloramine | Drinking Water | CDC. (n.d.). cdc.gov. https://www.cdc.gov/drinking-water/about/about-water-disinfection-with-chlorine-and-chloramine.html

The efficacy of chlorine-based disinfectants against planktonic and biofilm bacteria for decentralised point-of-use drinking water
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The efficacy of chlorine-based disinfectants against planktonic and biofilm bacteria for decentralised point-of-use drinking water. (n.d.). cir.nii.ac.jp. https://doi.org/10.1038/s41545-021-00139-w

Providing Safe Drinking Water in Small Systems
2019
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Cotruvo, J., Craun, G. F., & Hearne, N. (2019). Providing Safe Drinking Water in Small Systems. books.google.com. http://books.google.com/books?id=o3uCDwAAQBAJ&dq=Chlorine+is+used+to+disinfect+drinking+water.&hl=&as_pt=BOOKS&source=gbs_api

Presence and seasonal variation of trihalomethanes (THMs) levels in drinking tap water in Mostaganem Province in northwest Algeria
2017
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El-Attafia, B. & Soraya, M. (2017). Presence and seasonal variation of trihalomethanes (THMs) levels in drinking tap water in Mostaganem Province in northwest Algeria. doi.org. https://doi.org/10.19082/4364

Determination of Trihalomethanes (THMs) in Drinking Water of Eastern Part of Bandar Abbas City and Feasibility of Removing with Ultrasonic Irradiation
2014
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Khordedan, r., Azimi, A., Baghdadi, M., & Zahedi, A. (2014). Determination of Trihalomethanes (THMs) in Drinking Water of Eastern Part of Bandar Abbas City and Feasibility of Removing with Ultrasonic Irradiation. wwjournal.ir. http://www.wwjournal.ir/article_4370_1f823a779950886ec7020eab714cecef.pdf

Exposure to Drinking Water Trihalomethanes and Risk of Cancer: A Systematic Review of the Epidemiologic Evidence and Dose-Response Meta-Analysis.
2025
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Helte, E., Söderlund, F., Säve-Söderbergh, M., Larsson, S. C., & Åkesson, A. (2025). Exposure to Drinking Water Trihalomethanes and Risk of Cancer: A Systematic Review of the Epidemiologic Evidence and Dose-Response Meta-Analysis.. doi.org. https://doi.org/10.1289/EHP14505

Well water sanitizing and ph balancing questions
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Well water sanitizing and ph balancing questions. (n.d.). diy.stackexchange.com. https://diy.stackexchange.com/questions/170654

How can I prevent unpleasant smells and organisms in our water tank?
Get citation
How can I prevent unpleasant smells and organisms in our water tank?. (n.d.). diy.stackexchange.com. https://diy.stackexchange.com/questions/91885

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