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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).
EPA illustration of lead sources in residential buildings Infographic about lead in drinking water. The Lead and Copper Rule (LCR) is a United States federal regulation that limits the concentration of lead and copper allowed in public drinking water at the consumer's tap, as well as limiting the permissible amount of pipe corrosion occurring due to the water itself. [1]
The finalized rule announced by the EPA will subject six PFAS compounds to maximum contaminant levels, or MCLs, which set enforceable limits on the concentration of the compounds in drinking water.
EPA published standards in 1991 to ensure that total chromium is limited to 0.1 milligrams per liter or 100 parts per billion in drinking water. It is an odorless and tasteless metal that can be naturally occurring in rocks, plants, soil and volcanic dust, and animals.
This map shows water systems included in the EPA’s records, as of Jan. 11. It’s based on boundaries developed by SimpleLab, a water-testing company. Click on a system to see the number of ...
The EPA announced stricter standards Wednesday. When Michigan set clean drinking water standards in 2020, they were considered among the toughest in the U.S. The EPA announced stricter standards ...
In Europe, this includes the European Drinking Water Directive [1] and in the United States, the United States Environmental Protection Agency (EPA) establishes standards as required by the Safe Drinking Water Act. China adopted its own drinking water standard GB3838-2002 (Type II) enacted by Ministry of Environmental Protection in 2002. [2]
Eleven states already have regulatory standards for PFAS in drinking water. The EPA estimated that 6% to 10% of the country’s public water systems — 4,100 to 6,700 systems in total — will ...
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