The City of Whitehorse is facing a pricey upgrade to its water treatment system, after officials noticed changes in the quality of the city's groundwater in recent years. The proposal is to add a new filtration system, at a price of about $39 million — and the city is not yet sure where that money will come from. There's also a timeline, as the work would need to be done before the city's water licence comes up for renewal in five years. "At no time is our water not safe to drink," said Mike Firlotte, the city's water and wastewater services manager.