“You can't find what you don't look for,” UC Berkeley researcher Seth B.C. Shonkoff recently told the LA Times, referring to the chemicals that state regulators don’t know to test for in the recycled wastewater the California oil industry sells for use on crops here in the top agricultural producing state in the US.
Chevron produces more than 10 times as much water as it does oil at its Kern River oil field in California’s Central Valley, for instance — 760,000 barrels of water a day versus 70,000 barrels of oil. Half of that water is treated and sold to the Cawelo Water District in Bakersfield, which mixes it with fresh water and sells it exclusively to farmers.
Nobody knows if that water contains chemicals from fracking or other extreme oil extraction techniques, because the companies aren't required to test for them before selling the water. Nobody knows what those chemicals are, anyway, because companies aren't required to make that information public.
Energy and Climate Change Secretary Amber Rudd has warned that the next Conservative Party leader must have a strong stance on tackling climate change in order to win her support.