Interim Guidance on Determination and Use of Water-Effect Ratios for Metals
|EPA Number: ||823B94001|
|Date of Publication:||Febuary, 1994|
|Audience||teachers, concerned citizens, industry|
When a site-specific aquatic life criterion is derived for a metal, an adjustment procedure based on the toxicological determination of a Water-Effect Ratio (WER) may be used to account for a difference between the toxicity of the metal in laboratory dilution water and its toxicity in the water at the site. More...
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Water Quality Protection
Water-Effect Ratio (WER)