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AWWA WQTC65812
- Occurrence and Control of Naegleria Fowleri in Well Water Chlorine Resistance
- Conference Proceeding by American Water Works Association, 11/01/2007
- Publisher: AWWA
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The goal of this project was to determine the occurrence of the N. fowleri in well water. Thepresence of Naegleria fowleri was confirmed in 8.3% of the wells sampled. Re-testing of asubset of wells suggests that some wells are colonized by the organism. Laboratory experimentswith N. fowleri cysts and trophozoites indicate that the Ct (concentration of disinfectant X time)for free chlorine is 6 for the trophozoite form and 31 for the cysts at 23 ºC. These Ct values forN. fowleri cysts were comparable to published values for Giardia cysts but much greater thanthose for Cryptosporidium oocysts. Includes 26 references.
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