As part of MPR's “Trouble in the Water” series, MPR’s Dan Kraker reports on the history of pollution in the St. Louis river in nortern Minnesota, and efforts now to clean it up.

The St. Louis river has undergone a rebirth, of sorts, after decades of languishing under industrial decay. That said, serious concerns remain.

Report is fourth in an eight-part series.

Click links below for other parts of series:

part 1: https://archive.mpr.org/stories/2016/05/16/trouble-in-the-water-can-minnesota-stop-polluting-its-lakes-rivers

part 2: https://archive.mpr.org/stories/2016/05/17/trouble-in-the-water-random-acts-of-conservation-water-quality-depends-on-farmers

part 3: https://archive.mpr.org/stories/2016/05/18/trouble-in-the-water-should-farmers-or-city-pay-to-clean-the-water-iowa

part 5: https://archive.mpr.org/stories/2016/05/20/trouble-in-the-water-saving-minnesotas-polluted-lakes-takes-science-political-will

part 6: https://archive.mpr.org/stories/2016/05/23/trouble-in-the-water-from-septics-to-sewers-on-rainy-lakes-south-shore

part 7: https://archive.mpr.org/stories/2016/05/24/trouble-in-the-water-dogs-as-sentinelsbluegreen-algae-brings-toxic-mystery

part 8: https://archive.mpr.org/stories/2016/05/25/trouble-in-the-water-in-battle-to-keep-lead-from-water-st-paul-digs-deep

Awarded:

2016 MBJA Eric Sevareid Award, award of merit in Series - Large Market Radio category