Maximum Contaminant Levels definition

Maximum Contaminant Levels or “MCLs” shall mean the levels established under the Safe Drinking Water Act, 42 U.S.C. § 300g-1, for contaminants present in public drinking water systems.
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Examples of Maximum Contaminant Levels in a sentence

  • Although the water is brackish at the site, and therefore unsuitable for drinking, the metals detected in the shallow groundwater were generally below California's Maximum Contaminant Levels (MCLs) for drinking water (CDHS, 1989).

  • For example, the objective may be to collect ground water data for comparison with Maximum Contaminant Levels (MCL's).

  • All primary contaminants have primary Maximum Contaminant Levels (MCLs), which are legal limits on the concentration of these chemicals allowed in drinking water.

  • Human health reference points may be based on values such Maximum Contaminant Levels (MCL: ▇▇▇▇://▇▇▇▇▇.▇▇▇.▇▇▇/drink/standards/hascience.cfm), Health Advisory Levels (HAL); human health benchmarks (▇▇▇.▇▇▇.▇▇▇/▇▇▇▇▇▇▇▇▇▇/▇▇▇▇), or state/tribal water quality criteria or standards.

  • The time window for meeting Groundwater Protection requirements (i.e., Environmental Protection Agency Maximum Contaminant Levels) starts with placement of the first container on each pad and runs to the end of the 1,000-year DOE Order 435.1 post-closure period.

  • Data on exceedances of Maximum Contaminant Levels (MCLs) or drinking water standards, and detections of unregulated contaminants under the Unregulated Contaminant Monitoring Rule (UCMR) cycle 1, 2 and 3 from public water supplies are available.

  • These include but are not limited to those values currently under consideration for Portland Harbor screening values including: human health and ecological ambient Water Quality Criteria (WQC), residential tapwater SLVs from EPA’s Regional Screening Level Tables, and Drinking Water Maximum Contaminant Levels.

  • In May 2024, the EPA designated Perfluorooctanoic Acid (PFOA) and Perfluorooctane sulfonic Acid (PFOS) as CERCLA hazardous substances and promulgated Maximum Contaminant Levels (MCLs) for six PFAS compounds.

  • No volatile organic compounds or semi-volatile organic compounds were detected in the sample, but levels of arsenic, chromium, and lead were above the United States Environmental Protection Agency’s Maximum Contaminant Levels (MCLs).

  • Maximum Contaminant Levels and Water Quality Objectives exist to ensure protection of the beneficial uses of water.