Water Plant to Convert Final Two Filters to GAC Filtration

Plainfield Water plant filter

The Plainfield Township Board of Trustees this week approved nearly $200,000 for the Water Department to install granular activated carbon, or GAC, in its final two filters.

Converting the final two filters to GAC filtration will allow the water plant to treat an additional 2 million gallons of water per day with GAC, bringing the total GAC filtration capacity to the maximum 16 million gallons per day. Installation will begin in the next couple of 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 water plant currently has the capacity to treat 14 million gallons per day under GAC filtration. 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 past peak demand around 11 million gallons on hot, dry summer days.

This is the final phase of a multiyear project that 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.