This page contains news and, when available, background information, on Health Advisory Level:. Links on this site lead to other sites on the web.
Health Advisory Level: - A non-regulatory health-based reference level of chemical traces (usually in ppm) in drinking water at which there are no adverse health risks when ingested over various periods of time. Such levels are established for one day, 10 days, long-term and life-time exposure periods. They contain a wide margin of safety. [Environmental Protection Agency]
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