Arsenic is a poison that can contaminate drinking water. The Federal Government sets limit on how much is allowed in bottled and municipal water, but it puts no limits on arsenic in juice.
Of the 88 samples Consumer Reports analyzed, ten percent had arsenic levels that exceeded federal standards for bottled water.
One likely source of the contamination is pesticides containing arsenic were used in agriculture. Even though most are banned now, they remain in the soil.
The advocacy arm of Consumer Reports is urging the Food and Drug Administration to set standards for juice.
The Juice Products Association told Consumer Reports: "We are committed to providing nutritious and safe fruit juices and will comply with the limits established by the Food and Drug Administration."
For now, Consumer Reports says the best advice is for parents to limit how much juice your children drink.