Neskantaga First Nation in northwestern Ontario has been under a boil-water advisory for over 30 years — the longest in effect in Canada — and now leaders of the remote Ojibway community are ramping up efforts to get the federal government to pay for a new water treatment plant.

"It's been traumatic for a lot of my people. We shouldn't be living like this," said Chief Chris Moonias.

The community's water treatment plant was built in 1993. The boil-water advisory was issued by the First Nation and…