Aqua Metrology Systems

What does this live ticker show me?

This tabular ticker displays readings from the MetalGuard™ Chromium, a fully automated online hexavalent chromium (Chromium-6) monitoring unit from Aqua Metrology Systems. The MetalGuard Chromium monitor is installed at the water treatment plant or in the distribution network to allow operators access to data on chromium levels as frequently as every half an hour. MetalGuard Chromium is capable of measuring hexavalent (chromium-6) and total chromium levels in real time.

The left hand column displays the date and local time (PDT) the reading was received. The right hand column identifies the concentration of Chromium-6 measured in parts per billion (ppb).

The U.S. Environmental Protection Agency permits a total chromium maximum level of 100 ppb; however, California (State Water Resources Control Board) has a regulatory limit of 50 ppb and is reviewing a more stringent limit.

  • When Chromium-6 concentration levels are below 8 ppb, the ticker will display Chromium-6 data in green.
  • When Chromium-6 concentration levels reach 8 ppb the ticker display will change to amber. 
  • When Chromium-6 concentration levels increase to 10 ppb the ticker display will change to red.

The online MetalGuard Chromium analyzer enables water utilities to proactively manage their Chromium-6 mitigation strategies and ensure their water remains safe for human consumption.


Want to know more?

This data is brought to you by Aqua Metrology Systems. With more than 10 years combined experience, our team of industry experts and scientists endeavor to develop and commercialize online, real-time metrology solutions, allowing better control over contaminants in drinking water. If you work in the water industry and are interested in our technology contact us.



Our live ticker is designed to supplement the statutory public notice and regulatory readings provided by utilities; we accept no liability for consequential losses arising from this non-regulatory information service.