Ground Water Canada

News Contamination Water Issues
Water treatment plans underway to rid Renfrew of its discoloured, manganese-tainted drinking water

Water still deemed safe to drink

January 9, 2023  By Ground Water Canada

Renfew, Ont. – A system is being devised here to remove manganese from the local water supply.

Manganese has been deemed the culprit for the town’s discoloured drinking water that was experienced in the spring and summer.

It was determined water was leeching manganese from the Bonnechere River riverbed last spring and summer, rendering water that was discoloured yet still safe to drink. The dissolved manganese reacted with the water’s chlorine during the treatment process, leaving it brownish in colour.


A new filtering system at the water treatment plant is in its final stages of planning.

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