Frequent Questions

What guidance does the drinking water PAG provide emergency planners?

The PAGs are developed for up to one year of exposure. In comparison, the Maximum Contaminant Levels (MCL) were developed assuming 70 years of continuous exposure. The PAGs are intended to 1) prevent short-term health effects, 2) balance protection with other important factors that may arise during an emergency (ensuring the actions result in more benefit than harm) and 3) reduce the potential for chronic health effects.

Learn more about the drinking water PAG.

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