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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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Algae Blooms Return to Lake Champlain - As steamy weather descended on Vermont, Lake Champlain users and scientists awaited test results to learn whether last week’s blue-green algae blooms have persisted in spots along Burlington, Missisquoi, and St. Albans bays. Although the blooms, which can product potentially dangerous toxins, test samples were well below levels of concern, the Health Department warned lake users, especially children and pets, because they are more likely to swallow water when swimming, to avoid areas with dense amounts of algae.


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