From WV American Water Release
Water samples taken from the first two filters completed in the carbon change-out project at the Kanawha Valley water treatment plant showed no detection of MCHM. Sixteen water samples from various stages in the water treatment process over a 5-hour period, including eight samples of water that had passed through the new filter material, were sent to Eurofins Lancaster Laboratories, Inc. for analysis. Prior to sampling, the filters were conditioned, monitored and tested to meet all drinking water standards.

MCHM test results have been shared with the West Virginia National Guard, the West Virginia Bureau for Public and the WVTAP team. The filters are being put back into service, and testing will be conducted on filtered water following each subsequent filter change-out. Testing is performed down to a 0.38 parts per billion reporting level, which is the lowest existing detection level to date.

West Virginia American Water began changing out nearly 500 tons of Granular Activated Carbon in the plant’s 16 filters on April 1. The project is expected to take 8-9 weeks, subject to operational conditions. The Kanawha Valley plant continues to produce water that meets all drinking water standards and CDC guidance.