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The Florida Department of Health works to protect, promote, and improve the health of all people in Florida through integrated state, county, and community efforts.
Health Advisory Levels
Hazardous Waste Site Health Risk Assessment Program
- 877-798-2772
- phtoxicology@flhealth.gov
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Mailing Address
Mailing Address
4052 Bald Cypress Way, Bin A-08
Tallahassee, FL 32399-1710
A Health Advisory Level (HAL) is developed when a chemical is found in drinking water and no regulatory standard (MCL) exists for the chemical. The HAL concentration of a chemical in drinking water is a value that, based on the available data, is virtually certain not to cause adverse human health effects if consumed over a lifetime. HALs provide guidance for the public and the Department of Environmental Protection (DEP) on the potential for these chemicals to cause harm to humans.
The maximum contaminant level (MCL) is a standard established by the United States Environmental Protection Agency, under the Safe Drinking Water Act. It represents an acceptable level of a chemical under specified conditions that ensures the safety of a public drinking water supply. MCLs are used by DEP to regulate the level of chemicals allowed in drinking water. Find the Health Advisory Levels for Florida here.
Acronyms used:
HAL = Health Advisory Level
MCL = Maximum Contaminant Level
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