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Aluminum Aquatic Life Criteria Applicable to Oregon Fresh Waters - Proposed Rule

On April 18, 2019, EPA Administer Wheeler signed a proposed rule to establish federal Clean Water Act (CWA) aluminum aquatic life criteria for freshwaters under the state of Oregon’s jurisdiction.  This rule is being proposed to ensure that criteria are set at levels to protect aquatic life from the effects of exposure to harmful levels of aluminum. Aluminum naturally occurs at low levels in surface waters, such as rivers and lakes. However, at higher concentrations, it can be toxic to aquatic life.  The EPA’s proposal uses the latest scientific knowledge on aluminum toxicity in water and proposes to promulgate aluminum criteria for Oregon freshwaters based on the EPA’s 2018 national aluminum criteria recommendation to protect freshwater aquatic life.


Public Hearings

  • June 11, 2019 public hearing
  • June 12, 2019 public hearing

Comments on the Proposal

EPA accepted comments on the proposed rule at regulations.gov (Docket ID No. EPA-HQ-OW-2016-0694). The 45-day comment period closed on June 17, 2019.

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