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Chloride causes pollution in 50 MN lakes, streams

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MINNESOTA—50 Minnesota Lakes and streams are polluted with too much chloride and now considered ''impaired waters" where it mostly comes from road salt.

Excess chloride can damage aquatic life, damage infrastructure and cause health problems.

The Minnesota Pollution Control Agency says chloride seeps into the ground and gets into shallow groundwater so salt can stay there for a long time depending on the soil.

Public works says there's been increased training for snowplow operators when it comes to salt and the harmful effects it can have.

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