Yesterday PBS published a study* that found potentially unsafe levels of chromium-6, a known carcinogen, in the tap water of 31 of the 35 cities that were tested. Bend is on the list as nearly .78 parts per billion were found in Bend water provided by Avion Water. In 2011 California set a public-health goal at .20ppb. The EPA is still trying to determine what's an acceptable amount. In 1991 the federal agency set the limit at 100 ppb.