EPA — Maximum Contaminant Level for Arsenic in Drinking Water

Overview

The US Environmental Protection Agency Maximum Contaminant Level (MCL) for arsenic in drinking water is 10 parts per billion (10 µg/L), established in the 2001 Final Rule for Arsenic in Drinking Water and effective for compliance from January 23, 2006 (EPA As MCL). The 10 ppb MCL replaced a prior 50 ppb standard that had been in place since 1942 (EPA As MCL). The MCL applies to community water systems and non-transient non-community water systems under the Safe Drinking Water Act (EPA As MCL).

Rule

Sources

• EPA As MCL — EPA Office of Water. Final Rule for Arsenic in Drinking Water (2001).

References

Works cited in this page’s text, in first-appearance order. This is not the full corpus for this page; it is only what the prose above draws on. The complete set of sources is listed under Sources below. Each title links to its source record, which carries the ingest receipt, the extracted values, and the file hash of the document it was built from.

1. EPA Drinking Water Arsenic MCL Rule (10 ppb)U.S. Environmental Protection Agency, Office of Water · 2001 · www.epa.govGovernment

Update history

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