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Safety guidelines for copper in water

D J Fitzgerald1

  • 1Environmental Health Branch, South Australian Health Commission, Adelaide, Australia. fitzgerald.jim@health.sa.gov.au

The American Journal of Clinical Nutrition
|May 20, 1998
PubMed
Summary
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Current drinking water copper guidelines lack scientific support. New research on copper toxicity in humans is expected to inform future safe ingestion limits for public health.

Area of Science:

  • Environmental science
  • Toxicology
  • Public health

Background:

  • Scientifically sound guideline values for safe copper ingestion in drinking water are crucial for public health.
  • Existing guidelines from the US Environmental Protection Agency (1.3 mg Cu/L) and the World Health Organization (2.0 mg Cu/L) are based on limited defensible data.
  • Several international groups are re-evaluating copper guidelines and initiating epidemiological studies.

Purpose of the Study:

  • To highlight the need for scientifically robust data in setting drinking water guideline values for copper.
  • To identify the potential impact of ongoing research on future revisions of copper exposure limits.

Main Methods:

  • Critical review of existing data and assumptions used in deriving current copper guideline values.

Related Experiment Videos

  • Monitoring of ongoing international reviews and epidemiological studies on copper exposure and toxicity.

    • Main Results:

    • A significant lack of scientifically defensible information underlies current health-based guideline values for copper in drinking water.
    • Emerging epidemiological studies investigating acute copper toxicity in human populations are anticipated to influence future guideline revisions.

    Conclusions:

    • Current drinking water copper guidelines require re-evaluation due to insufficient scientific evidence.
    • Future revisions of safe copper ingestion levels will likely be informed by human population studies on copper toxicity.