Columbia man claims contaminants at Columbia Water Co. tower exceed maximum federal level
JULISSA RODRIGUEZ | FOR LNP | LANCASTERONLINE What happened: [On April 13] Columbia resident Adam Copenhaver told Mountville Borough Council that water test results sampled at a tower operated by Columbia Water Co. at 224 Eagle Path, Mountville, exceeded the federal maximum contaminant level for total trihalomethanes by 36% at 109 parts per billion versus 80 parts per billion, on Oct. 14, 2025. Columbia Water provides Mountville, Columbia and several other communities in Lancaster and York counties with public water. More: Copenhaver asserted TTHMs are a carcinogen. According to Pennsylvania Department of Environmental Protection, total trihalomethanes, or TTHMs, are a byproduct of a reaction between a disinfectant and natural organic matter in water. Acknowledgement: Council members thanked Copenhaver for bringing this issue to their attention. Public matter: The information Copenhaver provided is readily available on DEP’s website, where LNP | LancasterOnline found the most recent sa...