The MCLG is legally enforceable.

Question

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The Maximum Contaminant Level Goal (MCLG) is not legally enforceable. It is a non-enforceable health-based guideline set by the Environmental Protection Agency (EPA) for contaminants in drinking water to protect public health. The MCLG is set at a level at which no known or anticipated adverse health effects occur, with an adequate margin of safety. However, the EPA sets legally enforceable Maximum Contaminant Levels (MCLs) for contaminants that take into account both the MCLG and feasibility considerations.

The MCLG Is Legally Enforceable