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What is arsenic?

Arsenic is a semi-metallic element. It is odorless and tasteless. The chemical symbol for arsenic is As.

How does arsenic get into my drinking water?

Arsenic can migrate into groundwater sources from erosion of naturally occurring rocks, soils, and natural deposits. It can also come from run-off from farms, pressure treated lumber and other industrial sources.

What are arsenic's health effects?

Human exposure to arsenic can cause both short and long term health effects. Short or acute effects can occur within hours or days of exposure. Long or chronic effects occur over many years. Long term exposure to arsenic has been linked to cancer of the bladder, lungs, skin, kidneys, nasal passages, liver and prostate. Short term exposure to high doses of arsenic can cause other adverse health effects.

What is the Arsenic Drinking Water Standard?

The U.S. Environmental Protection Agency has established a Maximum Contaminant Level of 10 μg/L. Values below this level comply with the arsenic standard and water with less than 10 μg/L is considered safe to drink according to the EPA.