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Recent perchlorate findings "reemphasize the need for a credible safe-dose estimation" but aren't high enough to suggest an immediate hazard to health, says former EPA toxicologist Michael Dourson, who now runs Toxicology Excellence for Risk Assessment, a consulting firm in Cincinnati that has proposed 70 [micro]g/l as a safe maximum concentration for drinking water. Toxicology Excellence for Risk Assessment (TERA) is a nonprofit organization dedicated to the best use of toxicity dam for risk values. |
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