Water samples from Lake Nokomis in Minneapolis contained caffeine, a component of plastic, a soap ingredient, an antibiotic used on swine, a breakdown product of cocaine, an antidepressant and other chemicals, according to Minnesota Pollution Control Agency reports released last week.
Minnesota researchers found 56 chemicals - including cocaine - in the state's waters, according to two studies released this week that raise questions about potential impacts on wildlife and human health.
Environmental experts said the discoveries in lakes, rivers and streams increase the pressure on Wisconsin to figure out what's in its water. A key Wisconsin Department of Natural Resources official said that the state's waters were likely also contaminated, but that the state had no money for such monitoring.
The chemicals were detected at trace amounts in 47 of 50 Minnesota lakes, ...