Avion Water Company in Bend just released the results of certified water tests they conducted in a letter that went out to thousands of customers. The tests were done by a independent testing lab in Washington State in response to water tests released by a Washington D.C. lobbying group called the Environmental Working Group. Avion Water Company Vice President Jason Wick says the results show much lower levels of hexavalent chromium than the EWG test. The letter also points out that hexavalent chromium is often found in rocks, plants, soil, volcanic dust, humans and animals:  "We surmise that it occurs naturally in this area. All the volcanic activity and heat generated down in the earth; this is one of the things that makes our aquifers so good is the fact that we have all that fractured rock up on the cascades and the water can percolate down fairly rapidly. Unlike areas of the country that have a lot of clay and stuff and their aquifers take a long time to re-charge." Wick says they haven't received any negative feedback since the letters went out.