Is DC Water testing for chromium-6?
In February 2011, DC Water and the Washington Aqueduct began voluntarily testing for chromium-6. Quarterly, the Washington Aqueduct will collect samples from source water (Potomac River) and finished treated water and DC Water will collect samples from eight sites throughout the District. Samples are tested at an EPA-certified laboratory. Chromium-6 is found at extremely low levels – parts per billion (ppb) – in District water. A single part per billion is equivalent to one gallon of water in 1,514 Olympic size swimming pools.