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Arsenic occurs naturally in rocks and soil, water, air, and plants and animals.  It enters drinking water supplies from natural deposits in the earth or from agricultural and industrial practices.  Arsenic is odorless and tasteless.

What are the Drinking Water Standards?

The EPA has set the arsenic standard for drinking water at 0.01 mg/L or 10 parts per billion (ppb) to protect consumers served by public water systems from the effects of long-term, chronic exposure to arsenic. 

The Ohio Department of Health has adopted this standard as a non-enforceable health-based standard for private water systems.

What are the Health Effects?

What are the Treatment Options?

The treatment options, listed in the fact sheet below, are not enforceable by the Local Health Districts or the Ohio Department of Health. These are recommended options for private water systems owner.

References and Additional Resources

Page updated 05/25/2018