CHARLESTON, W.Va. (WSAZ) -- West Virginia American Water says all points of testing throughout the water distribution system shows that levels of MCHM, from the Freedom Industries spill, are below 10 parts per billion (ppb).
Ten ppb was established by the interagency team as the “non-detect” level of MCHM in the water distribution system and was based on the measurement capabilities of multiple laboratories used during the event.
That level is 100 times below the standard established by the CDC at 1 part per million (ppm).
The company says water tested at the treatment plant is below 2ppb as well as nearly all points tested to date, with only four samples showing above 2ppb.
“This additional data allows us to pinpoint our flushing activities and address odor issues in an expedited fashion,” said Jeff McIntyre, president of West Virginia American Water. “These additional efforts are solely to address odor issues and are not related to any concern regarding health thresholds set by the CDC. Water testing results indicate that water in the distribution system has been under the health-protective threshold of 1ppm since January 18.”
In addition, West Virginia American Water customers may have or will shortly see credits on their bill.
The credits are marked in a line entitled "flushing credit" and will be reflected on bills received from mid-February to mid-March depending on when meters were read.