Exemption
Meaning, Term, and Glossary Definition - What is Exemption?
A state (with primacy) may exempt a public water system from a requirement involving a Maximum Contaminant Level (MCL), treatment technique, or both, if the system cannot comply due to compelling economic or other factors, or because the system was in operation before the requirement or MCL was instituted; and the exemption will not create a public health risk.
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Related glossary terms:
Emergency Exemption
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