Beryllium
EPA MCLG
0.004 mg/L
The level in drinking water below which there is no known or expected risk to health. This is a goal, not an enforceable limit.
Health Effects
Intestinal lesions
Source: EPA — National Primary Drinking Water Regulations (retrieved 2026-07-27)
Common Sources
- Discharge from metal refineries and coal-burning factories
- discharge from electrical, aerospace, and defense industries
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The EPA MCLG for Beryllium is 0.004 mg/L. Upload your water test (PDF or a photo) and we'll email a plain-English reading of where your result lands — and every other number — free. Educational only, no medical claims.
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About the EPA MCLG
The EPA MCLG is the level of a contaminant in drinking water below which there is no known or expected risk to health. It is a non-enforceable public health goal, and is often stricter than the legal limit (MCL) water systems must meet.
Contaminant Type
Beryllium is classified as a Metals contaminant.
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Find out if Beryllium is in your tap water.
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