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Water Lecture 3 A. Disinfection B. Water Safety Plans - page 22 / 47

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Inactivation of Cryptosporidium Oocysts in Water by Chemical Disinfectants

Disinfectant

CT99   (mg-min/L)

Reference

Free Chlorine

7,200+

Korich et al., 1990

Monochloramine

7,200+

Korich et al., 1990

Chlorine Dioxide

>78

Korich et al., 1990

Mixed oxidants

<120

Venczel et al., 1997

Ozone~3-18  Finch et al., 1994

Korich et al., 1990

Owens et al., 1994

C. parvum oocysts inactivated by low doses of UV radiation: <10 mJoules/cm2

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