The current estimate of how much fish people eat in Washington State, a key criteria for settingwater quality standards, is less than one-tenth the figure used by Oregon.Credit: Jason AlcornThe Washington State Department of Ecology has known since the 1990s that its water-pollution limits have meant some Washingtonians regularly consume dangerous amounts of toxic chemicals in fish from local waterways.At least twice, Ecology has been told by its overseers at the U.S. Environmental Protection Agency to fix the problem and better protect people’s health. Ecology was close to finally doing that last year — until Boeing and other business interests launched an intense lobbying campaign aimed not just at Ecology but also at the Washington Legislature and then-Gov. Christine Gregoire. That is the picture that emerges from recent interviews as well as government documents obtained by InvestigateWest under the Washington Public Records Law.The problem lies in Ecology’s estimate of how much fish people eat. The lower the amount, the more water pollution Ecology can legally allow. So by assuming that people eat the equivalent of just one fish meal per month, Ecology is able to set less stringent pollution limits.Meanwhile, citing the health benefits of fish, the state Department of Health advises people to eat fish twice a week, eight times as often as the official estimate of actual consumption. The state knows that some members of Indian tribes, immigrants and other fishermen consume locally caught seafood even more often than that and are therefore at greater risk of cancer, neurological damage and other maladies.The Boeing Co. looms large in this story. In June 2012, Boeing said if Ecology went ahead with plans to make fish safer to eat, it would “cost the company hundreds of millions of dollars and severely hamper its ability to increase production in Renton and make future expansion elsewhere in the state cost prohibitive,” according to a Gregoire aide’s reconstruction of a conversation with a Boeing executive that month.