At least one in four US residential yards exceed new EPA lead soil level guideline

ScienceDaily
Jun 19, 2024, 2:37 pm102 pts
Roughly one in four U.S. households have soil exceeding the new U.S. Environmental Protection Agency's lead screening levels of 200 parts per million (ppm), halved from the previous level of 400 ppm, a new study found. For households with exposure from multiple sources, the EPA lowered the guidance to 100 ppm;…

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