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United States Environmental Protection Agency
Water Quality Criteria
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Human Health

Methylmercury

Criteria Document

The United States Environmental Protection Agency (EPA) has published new criteria to protect human health from methylmercury. Methylmercury is the form of mercury that is taken up by plant and aquatic life and accumulates in the fish. EPA is issuing water quality criteria for methylmercury to be used by states in determining methylmercury levels in fish tissue. This aquatic life water quality criteria replaces the criteria for total mercury published in 1980 and partially updated in 1997.

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Introduction (PDF, 527K)

  • Acknowledgments
  • External Peer Reviewers
  • Contents
  • Executive Summary

Chapters 1 - 3 (PDF, 288K)

  • Introduction
  • Toxicokinetics
  • Toxicological Basis for Criteria

Chapters 4 - 5 (PDF, 604K)

  • Risk Assessment for Methylmercury
  • Exposure Assessment

Chapters 6 - 8 (PDF, 205K)

  • Mercury Bioaccumulation
  • Water Quality Criterion Calculation
  • References

Appendix A (PDF, 289K)

  • Section I: Draft National Methylmuercury Bioaccumulation Factors
  • Section II: Chemical Translators for Mercury & Methylmercury

 

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