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Maximum contaminant levels (MCLs) are standards that are set by the United States Environmental Protection Agency (EPA) for drinking water quality. [1] [2] An MCL is the legal threshold limit on the amount of a substance that is allowed in public water systems under the Safe Drinking Water Act (SDWA).
The alum dosage is also insufficient to cause toxicity in humans, and is often similar to alum doses used in conventional drinking water treatment. [8] To reduce negative biological effects, the accepted limit for dissolved aluminum concentrations in a water body is 50 μg Al/L and pH should be restricted to a range of 5.5-9. [2]
The EPA has estimated that 6% to 10% of the water systems nationwide will have forever chemical levels in excess of those allowed under the new rule. ... drinking water treatment plants from those ...
The Safe Drinking Water Act is the principal federal law governing public water systems. [1] These systems provide drinking water through pipes or other constructed conveyances to at least 15 service connections, or serve an average of at least 25 people for at least 60 days a year. As of 2017 there are over 151,000 public water systems. [2]
The S.C. Department of Health and Environmental Control is scrambling to assess how a tight new limit on forever chemicals in drinking water will affect utilities and the public.
The EPA has issued federal limits on dangerous "forever chemicals" in drinking water, which it says will save thousands of lives and prevent serious illnesses.
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