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SIMULATED, NOT MEASURED. A regrowth bound for treated water: at 30 C it crosses 100 CFU/100mL in 46 h unprotected and 465 h with a maintained residual; at 35 C the unprotected window is 31 h. One-day storage at tropical temperature is the bound, and the residual is worth an order of magnitude. Computation only; nothing was built or field-tested.
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William Alexander Aldred (2026) studied this question.
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