What is hexavalent chromium (chromium-6)?
A study by the Environmental Working Group has been published regarding the presence of hexavalent chromium (chromium-6) in 140 Chicago-area water systems. Chromium-6 was made famous in the movie “Erin Brockovich,” where a California power company is accused of polluting a city's water supply. While this is a very important measure to monitor throughout the country, there is no need for alarm regarding the City of Aurora’s water supply.

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1. What is hexavalent chromium (chromium-6)?
2. Is Aurora's water safe?
3. Where does Aurora fall within the national standards for chromium?
4. What is the difference between total chromium and chromium-6 (hexavalent chromium)?
5. Does Aurora's water comply with California's health goals for chromium?
6. If California's standard was applied to Illinois, how would Aurora measure?