Water Plant Begins Final GAC Filtration Conversion

GAC filters

The Plainfield Township Water Department has begun the process of replacing the filter media in its final two filters with granular activated carbon, or GAC.

By converting the final two filters to GAC filtration, the Water Plant will be able to treat an additional 2 million gallons of water per day with GAC. This will bring the plant’s total GAC filtration capacity to the maximum 16 million gallons per day. Work is expected to be completed in the next couple weeks.

GAC filtration has been proven to be highly effective in eliminating PFAS, bacteria, pathogens and other undesirable elements from drinking water by using its activated carbon material to absorb contaminants from the water as they filter through.

The plant treats an average of 2.6 million gallons of water per day in the winter and 6 million gallons per day during the summer months, with peak demand around 11 million gallons on hot, dry summer days.

This multiyear project began in 2018 with a grant from the state of Michigan to study the effectiveness of GAC filtration in eliminating PFAS compounds in municipal drinking water. The Water Department will replace GAC material in its filters on a regular basis with new, clean GAC as part of the ongoing maintenance of the filters.

For more information on the project, click here.