The science of detection has far outpaced the ability of science to determine the health risks of ultra-low levels of substances in drinking water. It’s important to remember that detection does not mean a substance's presence is harmful.
We still need science-based answers to the primary question:
What levels of Cr-6 in drinking water are dangerous to human health?
The conversation about the effects of low levels of substances in our drinking water is extremely important and will continue as science searches for answers to our questions.
WSSC’s first priority has always been the health of our customers. We follow EPA guidelines and regulations to make sure we deliver our customers clean, safe drinking water that meets or does better than all appropriate standards. Our commitment to voluntarily monitor our water for Cr-6 is just the first step as we move forward.
If the EPA decides to regulate levels of Cr-6 in drinking water, WSSC will do whatever is necessary to meet those regulations.
Water World article on EPA study
Where can I find out more information about the contaminants that WSSC monitors?
WSSC and other Public Water Systems are required to publish an Annual Consumer Confidence Report, (entitled by WSSC as the Water Quality Report), which includes monitoring data on total chromium and other substances WSSC is required to monitor. The latest reports can be found at: http://wsscwater.com/home/jsp/content/wat-qual-report.faces.
Additional FAQs from the EPA about chromium in drinking water.