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Aquaculture Chemicals are Polluting Chilean Rivers
After previous studies showed dirty, sediment filled waters were harming Chilean rivers, regulators forced aquaculture operations to do a better job of filtering and cleaning their waste water.

Most fish farms draw water from clean Chilean rivers and return the waste water downstream. New rules have ensured that wastewater is now much less turbid, but new research shows many chemicals -- the remnants of fish and food waste, as well as antibiotics and disinfectants -- still bypass the installed filters.

Analysis, detailed in the journal Scientific Reports, showed aquaculture wastewater significantly increases the concentrations of carbohydrates and proteins -- as well as their more basic chemical building blocks -- into the river.



 
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$200 Million Barriers May Not Keep Silver Carp out of Lake Michigan - The silver carp was deliberately brought to the United States during the 1970s to help clean up pollution in fish farms. They weren’t expected to escape, and at the time it was believed that the fish couldn’t successfully reproduce in American waters. As it happened, silver carp can make it just fine in the wild.


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