MyCleanWater

Arsenic in Drinking Water

EPA Limit (MCL)
10 ug/L
EPA Goal (MCLG)
0 ug/L
Health Guideline
0.004 ug/L
Source: EWG
Status
Regulated

Health Effects

Long-term exposure to arsenic in drinking water increases the risk of skin, bladder, lung, and kidney cancer. It can also cause skin changes, cardiovascular problems, and developmental effects in children.

How Arsenic Gets Into Water

Naturally present in rocks and soil in many regions. Also enters water from mining operations, agricultural pesticides, and industrial waste. Groundwater sources tend to have higher levels.

How to Remove Arsenic

Reverse osmosis removes up to 99% of arsenic. Specialized adsorption media and iron-based filters are also effective. Standard carbon filters do not remove arsenic.

Recommended: Reverse Osmosis or Ion Exchange

RO systems or specialized ion exchange filters can reduce nitrates, arsenic, and other inorganic contaminants.

Up to 95% removal depending on contaminant

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