Montana Public Radio

Elk River

The Kootenai River near Libby, MT.
Corin Cates-Carney / Montana Public Radio

Montana environmental regulators took the first step last week to tighten pollution rules for toxins flowing into Lake Koocanusa and the Kootenai River. The new rules are aimed at stemming pollution coming from British Columbia coal mines.

The Kootenai Bridge over Lake Koocanusa from the east bank.
David M. Carson (CC-BY-SA-4)

 Editor's note: We've corrected part of this story. Read below.

Coal mines in Canada have been sending a harmful heavy metal downstream to northwest Montana for years, but state, tribal, federal and Canadian agencies all have different standards for how much is too much. Those agencies are meeting this week, and speaking with the public to try to come up with common standards.