EPA Unveils Draft Implementation Guide For 2021 Model CWA Nutrient Criteria

January 18, 2023
EPA has released draft guidance for states to implement its 2021 Clean Water Act (CWA) recommended nutrient criteria for lakes and rivers, including new pressure on regulators to use the model levels to develop numeric nutrient limits for their waters -- either immediately or as part of triennial reviews of delegated states’ water quality regulations. The Jan. 12 draft guide , framed as a frequently-asked-questions (FAQ) document, describes how states should implement the recommended criteria EPA finalized almost two years...

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