The use of wastewater from oil production on farmland in the Central Valley has come under closer scrutiny in a report from the Pacific Institute, an Oakland-based environmental think tank. Treated wastewater has been used for years on 90,000 acres in Kern County, a small fraction of the county’s total farmland. The report recommends a comprehensive scientific review of the practice. The Central Valley Water Board agrees, and is putting together a panel of experts from state agencies and academia to investigate any potential threat to public health and food safety. Pacifica’s Vic Bedoian reports from Fresno.