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Multiple Choice

What turbidity regulation is cited?

Turbidity is a quick indicator of how clear the water is and how effective the filtration is at removing particles. The regulation cited sets a tight finished-water turbidity limit of 0.3 NTU, with the requirement that this level be met in 95% of monthly measurements, and no single measurement may exceed 1 NTU. This 0.3 NTU target is chosen because lower turbidity improves disinfection performance and enhances the removal of microbes. The other values (1.0, 0.1, 3.0 NTU) are not the standard regulatory limit used in this context.

Turbidity is a quick indicator of how clear the water is and how effective the filtration is at removing particles. The regulation cited sets a tight finished-water turbidity limit of 0.3 NTU, with the requirement that this level be met in 95% of monthly measurements, and no single measurement may exceed 1 NTU. This 0.3 NTU target is chosen because lower turbidity improves disinfection performance and enhances the removal of microbes. The other values (1.0, 0.1, 3.0 NTU) are not the standard regulatory limit used in this context.