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the claim

Cryptosporidium can survive for days in properly chlorinated swimming pools.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
5 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 Cryptosporidium can survive for days in properly chlorinated swimming pools?

Yes. The CDC states Cryptosporidium can survive up to 10 days in properly treated pool water, and a 2026 peer-reviewed column says it survives for days in properly chlorinated water; a pediatric review adds survival over a week in a properly chlorinated pool.

Verdict: SUPPORTED · 5 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 · 5
Cryptosporidium parvum
Get citation
Cryptosporidium parvum. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Cryptosporidium_parvum

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More for · 4
How long do pathogens persist and survive in water? A systematic review.
2025
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FK, S., A, O., I, A., & ES, D. (2025). How long do pathogens persist and survive in water? A systematic review.. doi.org. https://doi.org/10.3389/fmicb.2025.1654785

Crypto outbreaks linked to swimming have doubled since 2014 | CDC Online Newsroom | CDCMinus
Get citation
Crypto outbreaks linked to swimming have doubled since 2014 | CDC Online Newsroom | CDCMinus. (n.d.). archive.cdc.gov. https://archive.cdc.gov/www_cdc_gov/media/releases/2017/p0518-cryptosporidium-outbreaks.html

Diarrhea and Swimming Still Don’t Mix
2026
Get citation
Diarrhea and Swimming Still Don’t Mix. (2026). doi.org. https://doi.org/10.70387/001c.161612

Nelson Pediatrics Board Review E-Book
2025
Get citation
Jr., T. D. & Bell, L. M. (2025). Nelson Pediatrics Board Review E-Book. play.google.com. https://play.google.com/store/books/details?id=70omEQAAQBAJ&source=gbs_api

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