EPA's Study of Hydraulic Fracturing and Its Potential Impact on Drinking Water Resources

Toxicological Studies

Toxicological studies summarize available toxicological information and, as necessary, conduct screening studies for chemicals associated with hydraulic fracturing operations.

Throughout the hydraulic fracturing water lifecycle there are routes through which fracturing fluids and/or naturally occurring substances could be introduced into drinking water resources. To support future risk assessments, EPA will summarize existing data regarding toxicity and potential human health effects associated with these possible drinking water contaminants.