Capital Regional District directors voted to add another $5.2 million to the $783-million secondary sewage treatment project last week.
The additional cash will pay for an oxidization process to further reduce the concentration of pharmaceuticals, personal care products and household cleaners in sewage waste.
The total price of the project is now slated at approximately $788 million.
B.C. Environment Minister Mary Polak has so far refused to intervene in the project after Esquimalt rejected zoning for a wastewater treatment plant at McLoughlin Point.
At a committee meeting May 14, Esquimalt Mayor Barb Desjardins asked that the Seaterra project be put on hold for six months or until they hear back from Polak, a vote that was delayed until next month.