Three more N.W.T. schools have been discovered to have elevated concentrations of lead in drinking water, amid ongoing testing of educational facilities across the territory.

Deh Gah School in Fort Providence, Mezi Community School in Whatì and Jean Wetrade School in Gamètì all had multiple fixtures which testing showed produced water with concentrations of lead above safe maximums, according to a Thursday night release from the territorial government.

At Deh Gah School, one elementary classroom fixture produced lead concentrations more than four times acceptable levels.