West Virginia American Water: Filter Replacement Complete, No Trace of MCHM
West Virginia American Water has replaced its filters and no longer detects chemicals that spilled into its water distribution system in January.
A news release Thursday says the utility has only used new filters since May 23, when it removed the last of 16 filters tainted in the spill.
Results returned Thursday showed no chemical traces in water heading to people's homes and businesses.
The chemical was found in treated water in March. It was 2,000 times less concentrated than health officials deem safe to drink.
West Virginia American Water began replacing filters April 1 after finding chemicals were flowing off into the distribution system for 300,000 people.
The company estimates more than a $1 million cost for filters.
The spill spurred a tap-water ban for up to 10 days.