1 Stir the heavy cream into the ice cream base.  Chill completely: Leave the ice cream base over the ice water bath, stirring occasionally, until it's completely chilled. This will take about 20 minutes. Alternatively, cover the bowl with the base and chill in the fridge for 3 hours or overnight.
Two other sources of arsenic, especially of some concern for children, is arsenic in groundwater and subsequently, in rice that is grown in such groundwater. Rice is a common food for children but to date, there are no regulations about the levels of arsenic that are considered safe for consumption.
Health Effects. Public health policies have primarily focused on control of arsenic in water. The EPA, through the Safe Drinking Water Act, is required to regulate the concentration of arsenic in water. Beginning in 1947, the maximum contaminant level of arsenic in water was 50 parts per billion (ppb).