Over 9 billion gallons of hazardous waste are injected underground every year.
GAO report from EPA website
USGS Fact Sheet on Saline Water co-produced with energy resources
USGS – Water Quality of the Quantenary andAda-Vemosa Aquifers on the Osage Reservation
Underground Injection of Hazardous Wastes
Recent Incidents Involving the Release of Chemicals
UTWA Fact Sheet